gwyach

== Welsh == === Etymology === From Middle Welsh gwyach, from Proto-Celtic *wessakos. Cognate with Irish fiach (“raven”). === Pronunciation === (North Wales) IPA(key): /ˈɡʊɨ̯.aχ/ (South Wales) IPA(key): /ˈɡʊi̯.aχ/ === Noun === gwyach f (plural gwyachod) (ornithology) grebe (Podiceps) ==== Derived terms ==== === Mutation === === References === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “gwyach”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies Matasović, Ranko (2009), Etymological Dictionary of Proto-Celtic (Leiden Indo-European Etymological Dictionary Series; 9), Leiden: Brill, →ISBN