gnáthaighim Definitions (by source) Show all An Teagasg Críosdaidhe I make a practice of, 211, 1788, 2470-1, 2498. An Teagasg Críosdaidhe. Author: Bonabhentura Ó hEodhasa, O.F.M.. Editor: Fearghal Mac Raghnaill, O.F.M.