tonn-ghaoth Definitions (by source) Show all Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death wave-wind;--pl. dat. –aibh, 9137 Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death. Author: Geoffrey Keating. Editor: Osborn Bergin.