Cáisc, f. (gs. Cásca, pl. ~eanna). 1. Easter; Passover. Aimsir na Cásca, Eastertide. Domhnach, Luan, Cásca, Easter Sunday, Monday. Seachtain na Cásca, Easter Week. S.a. lus. Ní dóichí an Cháisc a bheith ar an Domhnach, as sure as anything. 2. (gs. as attrib.a.) Paschal. Tine Chásca, paschal fire. Uan Cásca, paschal lamb.
Chomh ~ is atá tú beo, grian ar an aer, méara ort, cluas ar do leiceann, gob ar phréachán, púdar i nDoire, an Cháisc ar an Domhnach! As sure as anything!