toghtha Definitions (by source) Show all The Book of O'Hara: Leabhar Í Eadhra ógbhaidh t. 934, 1049. The Book of O'Hara: Leabhar Í Eadhra. Editor: Lambert McKenna S.J. Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death chosen, 10484 Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death. Author: Geoffrey Keating. Editor: Osborn Bergin.