A cake of the first of your dough. עַרִסֹת, only used here and in the two passages which refer to this enactment (Nehemiah 10:1-39 :87; Ezekiel 44:30). It probably means whole meal coarsely ground, the first preparation of the new corn available for baking and eating.
Septuagint has ἀπαρχὴ φυράματος, an expression used by St. Paul in Romans 11:16. As … the heave offering of the threshing floor, so shall ye heave it, i.e; the offering of bread from the home was to be made in addition to the offering of ears or grains from the threshing-floor, and in the same manner.
No doubt this latter offering was a very ancient (Genesis 4:3) and general one, but it is not clearly described in the Law (see, however, Le Romans 2:14; 23:10). All these heave offerings were the perquisite of the priest.