Geiriadur Prifysgol Cymru

11/04/2025

Gair y dydd: awrlais https://geiriadur.ac.uk/gpc/gpc.html?awrlais - Enw arall ar gloc, oriawr a watsh. Adffurfiad yw'r enw o'r gair 'orlais' (dan ddylanwad 'awr' a 'llais') sy'n fenthyciad o'r Saesneg Canol 'orlage' neu'n uniongyrchol o'r Ffrangeg 'horloge'. Mae'n enw addas iawn ar y clociau cwcw yn y llun.🕰️

Word of the day: awrlais https://geiriadur.ac.uk/gpc/gpc.html?awrlais Another name for a clock or a watch. This word is a re-formation of 'orlais' (borrowed from the English 'orlage' or the French 'horloge'), under the influence of 'awr' (hour) and 'llais' (voice). It is a very fitting name for the cuckoo-clocks in the photo.🕰

10/04/2025

Gair y Dydd cwningen https://www.geiriadur.ac.uk/gpc/gpc.html?cwningen Cnofil bychan epiliog yn turio yn y ddaear. Gair benthyg o Saesneg Canol, yn wreiddiol o Ffrangeg Normanaidd.

Word of the Day cwningen https://www.geiriadur.ac.uk/gpc/gpc.html?cwningen Small, prolific, burrowing rodent, rabbit or coney. Borrowed from Middle English, originally from Norman French.

Thermos CC BY-SA 4.0 https://en.wikipedia.org/wiki/European_rabbit #/media/File:Oryctolagus_cuniculus_Finnish_National_Opera.jpg

09/04/2025

Gair y dydd: cafn ‘cerwyn neu dwba wedi ei naddu naill ai o bren neu o garreg; llestr hirgul agored i ddal dŵr neu fwyd i greaduriaid’ https://www.geiriadur.ac.uk/gpc/gpc.html?cafn. Cafn moch yw’r un arbennig hwn.

Word of the day: cafn ‘trough’ https://www.geiriadur.ac.uk/gpc/gpc.html?cafn. This particular one is a pig-trough or swine-trough.

08/04/2025

Gair y Dydd: cylchynol https://geiriadur.ac.uk/gpc/gpc.html?cylchynol. Sefydlodd Griffith Jones, Llanddowror, a fu farw ar y dyddiad hwn yn 1761, ysgolion cylchynol i ddysgu oedolion a phlant Cymru i ddarllen gan wneud Cymru’n un o’r gwledydd mwyaf llythrennog yn y byd yn y cyfnod hwnnw.

Word of the Day: cylchynol https://geiriadur.ac.uk/gpc/gpc.html?cylchynol = circulating. Griffith Jones of Llanddowror, who died on this date in 1761, organised circulating schools to teach adults and children in Wales to read thus making Wales one of the most literate countries in the world at the time.

07/04/2025

Gair y Dydd: eithin https://geiriadur.ac.uk/gpc/gpc.html?eithin Mae'r eithin yn eu blodau! Enw arall a welir yn GPC yw 'aith'. A wyddoch am enwau eraill?

Word of the Day: eithin (furze, gorse) https://geiriadur.ac.uk/gpc/gpc.html?eithin Gorse is found in many habitats, from coast to town. Another name for it found in the Dictionary is 'aith'.

04/04/2025

Gair y dydd: igam-ogam https://geiriadur.ac.uk/gpc/gpc.html?igam-ogam - sef gwyro i'r chwith a'r dde ar yn ail, symud o'r naill ochr i'r llall ac yn droellog. Daw tarddiad y gair hwn yn syml o'r symudiad cerdded 'i gam o gam'.
A ydych chi'n gyfarwydd â'r ffurfiau miga-moga, fingam-mongam neu gim-gam-gimwch?

Word of the day: igam-ogam https://geiriadur.ac.uk/gpc/gpc.html?igam-ogam - meaning zigzag, and also tortuous and winding. The origin 'i gam+o gam' refers to one's walk and can be literally translated as 'from step to step'. Igam-ogam is completely unrelated to the ogham writing system.

03/04/2025

Gair y Dydd: croniad https://www.geiriadur.ac.uk/gpc/gpc.html?gpc027916 Y weithred o gronni; yr hyn a gronnir, casgliad, crynhoad, pentwr. Ydy eich gwaith chi'n cronni weithiau?

CC BY-NC 2.0 JasonUnbound https://flic.kr/p/7S9iqm

Word of the Day: croniad https://www.geiriadur.ac.uk/gpc/gpc.html?gpc027916 a gathering; collection, heap. Does your work build up sometimes?

02/04/2025

Gair y dydd: uchelwydd https://www.geiriadur.ac.uk/gpc/gpc.html?Uchelwydd a welir yn tyfu'n sypynnau blêr yn uchel mewn coed - yn edrych braidd fel nythod brain o bell! Mae nifer o enwau arno yn y Gymraeg - gwyglys, uchelfar, pren awyr, ac ati. Beth yw eich gair chi?

🌳🌳🌳

Word of the day: uchelwydd https://www.geiriadur.ac.uk/gpc/gpc.html?Uchelwydd 'mistletoe', often seen growing in bundles high up in trees, not dissimilar to crows' nests from afar! If you search for 'mistletoe' in the dictionary you will find many other words for it in Welsh.

01/04/2025

Gair y Dydd: tridiau(’r) aderyn du a dau lygad Ebrill https://geiriadur.ac.uk/gpc/gpc.html?tridiau_aderyn_du – tri diwrnod olaf Mawrth a dau (neu dri) diwrnod cyntaf Ebrill pryd y dywedid, mewn rhai ardaloedd, mai dyna’r amser gorau i hau ceirch.

Word of Day: tridiau(’r) aderyn du a dau lygad Ebrill https://geiriadur.ac.uk/gpc/gpc.html?tridiau_aderyn_du – the last three days of March and the first two (three) days of April which were said, in some areas, to be the best time for sowing oats.

31/03/2025

Gair y Dydd: tiwlip https://geiriadur.ac.uk/gpc/gpc.html?tiwlip Mae'n fenthyciad o'r Saesneg (a'i fenthycodd o'r Dwrceg), ond tybed a wyddoch am unrhyw enwau tafodieithol am y blodyn lliwgar hwn o deulu'r lili?

Word of the Day: tiwlip (tulip) https://geiriadur.ac.uk/gpc/gpc.html?tiwlip The word is borrowed from English (in turn a borrowing from Turkish). I wonder if there are any dialectal names for this colourful flower?

28/03/2025

Gair y dydd: swigw https://geiriadur.ac.uk/gpc/gpc.html?swigw Gweler hefyd y ffurfiau yswidw, swidw, sywidw, yswigw a sywigw. Dyma enw arall am y titw a rhai adar bychain eraill. Ar lafar yng Ngheredigion, clywir y gair swigw yn cael ei ddefnyddio am ferch benysgafn a hoeden.
Ydych chi erioed wedi clywed neu ddefnyddio'r gair?

Word of the day: swigw https://geiriadur.ac.uk/gpc/gpc.html?swigw See also the forms yswidw, swidw, sywidw, yswigw, and sywigw. This is another name for the tit and some other small birds. Colloquially in Ceredigion, the word swigw can be heard being used for a ditsy or a hoyden girl.

27/03/2025

Gair y Dydd twng https://www.geiriadur.ac.uk/gpc/gpc.html?twng Y weithred o dyngu, llw. Gair cyfarwydd erbyn hyn? A ddywedech chi "ar eich twng" neu "ar eich llw"?

Word of the Day https://www.geiriadur.ac.uk/gpc/gpc.html?twng A swearing, oath. Still a familiar word? Would you say "ar eich twng" or "ar eich llw" to mean "on your oath"?

26/03/2025

Gair y dydd: draen duon, draenen ddu ‘blackthorn, Prunus spinosa’ https://www.geiriadur.ac.uk/gpc/gpc.html?draen%20duon. Mae’r goeden yn blodeuo ar hyn o bryd, gyda’r blodau’n ymddangos ychydig o flaen y dail.
Word of the day: draen duon, draenen ddu ‘blackthorn, Prunus spinosa’ https://www.geiriadur.ac.uk/gpc/gpc.html?draen%20duon. The tree is in bloom at present, with the flowers appearing shortly before the leaves.

25/03/2025

Gair y Dydd: gŵyl Fair y Cyhydedd https://geiriadur.ac.uk/gpc/gpc.html?gwyl_Fair_y_Cyhydedd, sef heddiw, y 25ain o Fawrth. Mae’n nodi ymweliad yr angel Gabriel â’r Forwyn Fair ac yn digwydd yn agos i gyhydnos y gwanwyn.

Word of the Day: gŵyl Fair y Cyhydedd https://geiriadur.ac.uk/gpc/gpc.html?gwyl_Fair_y_Cyhydedd (the Annunciation of the Virgin Mary), which falls on this day, 25th March. It notes the coming of the angel Gabriel to the Virgin Mary and occurs near the spring equinox.

24/03/2025

Gair y dydd: briallu https://geiriadur.ac.uk/gpc/gpc.html?briallu Un o flodau'r gwanwyn, yn edrych yn ddel heddiw ar y lawnt gerllaw swyddfa'r Geiriadur. Ceir sawl ffordd o ddweud enw'r blodyn bach hwn ar lafar, megis briellu, brallu, a brigellu. Tybed beth fyddech chi'n ei ddweud?

Word of the day: briallu (primrose) https://geiriadur.ac.uk/gpc/gpc.html?briallu A lovely spring flower, looking pretty today on the lawn near the Geiriadur's office. There are many colloquial forms for this flower such as briellu, brellu, brallu, biarllu, bierllu, brialla, and brigellu.

21/03/2025

Gair y dydd: Alban Eilir https://geiriadur.ac.uk/gpc/gpc.html?Alban_Eilir - Gair gwneud gan Iolo Morgawng, yn enw un o'r ddwy adeg yn y flwyddyn pan fydd y dydd a'r nos o'r un hyd. Er mai 20 Mawrth (ddoe) yw dyddiad mwyaf cyffredin Alban Eilir, gall y dyddiad amrywio rhwng 19 a 21 Mawrth.

📷: Llywelyn2000

Word of the day: Alban Eilir (vernal equinox) https://geiriadur.ac.uk/gpc/gpc.html?Alban_Eilir - A made-up word by Iolo Morganwg, for one of the two times of the year when the day and night are of the same length. Although 20 March (yesterday) is the usual date of the Alban Eilir, it can also take place on 19 and 21 March.

📷: Llywelyn2000

20/03/2025

Gair y Dydd: hapusrwydd https://geiriadur.ac.uk/gpc/gpc.html?hapusrwydd Mae'r braf gweld yr haul ar Ddiwrnod Rhyngwladol Hapusrwydd - dymunwn i chi ddedwyddwch. Chwiliwch y Geiriadur am eiriau eraill sy'n golygu hapusrwydd - mae nifer ohonynt! https://www.dayofhappiness.net/

Word of the Day: hapusrwydd (happiness) https://geiriadur.ac.uk/gpc/gpc.html?hapusrwydd It's good to see the sun shining on World Happiness Day - we wish you joy. Why not search the Dictionary for other Welsh words for happinesss - there are quite a few! https://www.dayofhappiness.net/

Celebrate on 20 March. Join the Action for Happiness community and help create a happier and kinder world, together.

19/03/2025

Gair y dydd: pyst dan haul https://www.geiriadur.ac.uk/gpc/gpc.html?pyst%20o%20haul neu ‘byst dan yr haul’ yn ôl eraill. Oes gennych chi enw gwahanol arnynt?

Yn ôl hen goel tywydd, mae pyst dan haul ar adeg machlud yn arwydd sicr fod glaw ar y ffordd.

🌧️💦💦⛈️

Word of the day: pyst dan haul https://(www.geiriadur.ac.uk/gpc/gpc.html?pyst%20o%20haul ‘sunbeams’, or ‘sun drawing water’. Have you come across another name for them in Welsh?

Seeing them at sunset is a sure sign that rain is imminent, according to an old tradition.