cailleach Definitions (by source) Show all An Teagasg Críosdaidhe c. dhubh, nun, 550, 553; féach bean riaghalta 2191, 2243. An Teagasg Críosdaidhe. Author: Bonabhentura Ó hEodhasa, O.F.M.. Editor: Fearghal Mac Raghnaill, O.F.M.