Borrowed from Middle English mel, From Old English mǣl, from Proto-Germanic *mēlą. The m was changed to b as a back-formation from the mutated forms, where *méile and *mhéile were reinterpreted as mbéile and bhéile.
béile m (genitive singular béile, nominative plural béilí)
|Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.|