coimhideachd Definitions (by source) Show all An Teagasg Críosdaidhe an t-aingeal coimhideachda, the guardian angel, 2234. An Teagasg Críosdaidhe. Author: Bonabhentura Ó hEodhasa, O.F.M.. Editor: Fearghal Mac Raghnaill, O.F.M.