'Side' in the Bible

He shall kill it on the north side of the altar before Yahweh. Aaron's sons, the priests, shall sprinkle its blood around on the altar.

The priest shall bring it to the altar, and wring off its head, and burn it on the altar; and its blood shall be drained out on the side of the altar;

He shall sprinkle some of the blood of the sin offering on the side of the altar; and the rest of the blood shall be drained out at the base of the altar. It is a sin offering.