bain-treabhthach
Definitions (by source)
f., widow (now generally baintreach).
Stories from Keating's History of Ireland. Editor: Osborn Bergin.
f., widow, 1503; dat, -thaigh, 1500-5
Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death. Editor: Osborn Bergin.