soup, juice of boiled flesh, Irish eanbhruithe, Early Irish enbruthe, from in and bruith, boil. Corm. and O'Cl. have an obsolete broth, bruithe, flesh, and explain it as "water of flesh". For en, water, See eanghlas. Most dialects make it "chicken-soup", as from eun+ bruith.
Etymological dictionary of the Gaelic language.
Alexander Gairm Publications.
1982.