Lewis & Short

pascha, ae, f., and ătis, n., = πάσχα (Hebr. [??]).

  1. I. The feast of the Passover, Easter: sollennibus Paschae, Tert. ad Uxor. 2, 4: lege dedit pascham, id. in Carm. adv. Marc. 2, 80: pascharum dies, Symm. Ep. 10, 77: dominicum pascha celebrare, Hier. Ep. 96, n. 20: post sanctum pascha, Aus. Ep. 10, 17: paschate vicino, Hier. in Matt. 26, 3: per tria paschata, id. in Dan. 9, 24.
  2. II. The paschal lamb, Vulg. 1 Cor. 5, 7; cf. id. Marc. 14, 12.