parts of peace-offerings were so called, because they were waved by the priests ( Exodus 29:24 Exodus 29:26 Exodus 29:27 ; Leviticus 7:20-34 ; 8:27 ; 9:21 ; Leviticus 10:14 Leviticus 10:15 , etc.), in token of a solemn special presentation to God. They then became the property of the priests. The first-fruits, a sheaf of barley, offered at the feast of Pentecost ( Leviticus 23:17-20 ), and wheat-bread, the first-fruits of the second harvest, offered at the Passover (10-14), were wave-offerings.

These dictionary topics are from
M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition,
published by Thomas Nelson, 1897. Public Domain, copy freely.