Paschal Lamb

noun3

1. •
   (historical) The lamb eaten at Passover.

   • The Paschal Lamb was instituted and eaten the night before the children of Israel were indeed delivered from Egypt. — 1530
2. •
   (figurative) Jesus Christ symbolized as a sacrifice for the sins of humankind.
3. •
   A lamb depicted with nimbus and bearing a flag (usually St. George's cross: argent a cross gules).

   • […]but when the Holy or Paschal Lamb is intended then the face should be guardant or reguardant. — 1894