Heave offering

Heb. terumah, (Ex. 29:27) means simply an offering, a present,
including all the offerings made by the Israelites as a present.
This Hebrew word is frequently employed. Some of the rabbis
attach to the word the meaning of elevation, and refer it to the
heave offering, which consisted in presenting the offering by a
motion up and down, distinguished from the wave offering, which
consisted in a repeated movement in a horizontal direction, a
"wave offering to the Lord as ruler of earth, a heave offering
to the Lord as ruler of heaven." The right shoulder, which fell
to the priests in presenting thank offerings, was called the
heave shoulder (Lev. 7:34; Num. 6:20). The first fruits offered
in harvest-time (Num. 15:20, 21) were heave offerings.