eídtréan Definitions (by source) Show all An Teagasg Críosdaidhe weak; bch. -treisi 331. An Teagasg Críosdaidhe. Author: Bonabhentura Ó hEodhasa, O.F.M.. Editor: Fearghal Mac Raghnaill, O.F.M. Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death weak, 2918 Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death. Author: Geoffrey Keating. Editor: Osborn Bergin.