mío-rún Definitions (by source) Show all Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death m., malice; gen. –rúin, 3042, 6636 Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death. Author: Geoffrey Keating. Editor: Osborn Bergin.