ceas Definitions (by source) Show all Five seventeenth-century political poems in ceas naoíon, weakness, debility, I 138 n. Five seventeenth-century political poems. Editor: Cecile O’Rahilly. Poems on the O'Reillys gloom, sadness, sickness. fá cheas bróin, 2893; a n-éincheis 3288 Poems on the O'Reillys. Editor: James Carney. The Book of O'Hara: Leabhar Í Eadhra i gceas chumhadh 533; i mian ceasa 3265. The Book of O'Hara: Leabhar Í Eadhra. Editor: Lambert McKenna S.J. Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death m., grief, affliction, 7603 Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death. Author: Geoffrey Keating. Editor: Osborn Bergin.