fiuchaim, fich- feich-
Definitions (by source)
(not feach-) [EC foirneadh], I boil, burn, etc.; fiuchaidh fuil 7 26; f.
Aithdioghluim Dána: A Miscellany of Irish Bardic Poetry, Historical and Religious, including the Historical Poems of the Duanaire in the Yellow Book of Lecan. Vol II, Translations, Notes, Vocabulary. Editor: Lambert McKenna S.J.
I boil. Metaphorically: fiuchais...d'fhíoch, he boiled with rage, 1574.
Poems on the O'Reillys. Editor: James Carney.