'Wave breast' in the Bible

For the wave-breast and the heave-shoulder have I taken of the children of Israel from off the sacrifices of their peace-offerings, and have given them to Aaron the priest, and to his sons, by a statute for ever, from among the children of Israel.

And the wave-breast and heave-shoulder shall ye eat in a clean place; thou, and thy sons, and thy daughters with thee: for they are thy due, and thy sons' due, which are given out of the sacrifices of peace-offerings of the children of Israel.

The heave-shoulder and the wave-breast shall they bring, with the offerings made by fire of the fat, to wave it for a wave-offering before the LORD; and it shall be thine, and thy sons' with thee, by a statute for ever; as the LORD hath commanded.