1) the altar for slaying and burning of victims used of
    1a) the altar of whole burnt offerings which stood in the court of
        the priests in the temple at Jerusalem
    1b) the altar of incense which stood in the sanctuary or the Holy Place
    1c) any other altar
        1c1) metaph., the cross on which Christ suffered an expiatory
             death: to eat of this altar i.e. to appropriate to one's
             self the fruits of Christ's expiatory death