uachtarach Definitions (by source) Show all Aibidil Gaoidheilge & Caiticiosma: Seaán Ó Cearnaigh's Irish primer of religion, published in 1571 ‘superior’ 53.17 Aibidil Gaoidheilge & Caiticiosma: Seaán Ó Cearnaigh's Irish primer of religion, published in 1571. Editor: Brian Ó Cuív. Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death upper, higher, 7997 Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death. Author: Geoffrey Keating. Editor: Osborn Bergin.