bárc Definitions (by source) Show all Poems on the O'Reillys 1. a boat, a ship. Acc. pl. bárca, 2560 2. (Bérla na bhFileadh), 2141-4 n. Poems on the O'Reillys. Editor: James Carney. Stories from Keating's History of Ireland f., bark, ship. Stories from Keating's History of Ireland. Author: Geoffrey Keating. Editor: Osborn Bergin.