[pro.ven.tric.u.lus] n, pl -li [NL] (ca. 1836) 1: the glandular or true stomach of a bird that is situated between the crop and gizzard
2: a muscular dilatation of the foregut in most mandibulate insects that is armed internally with chitinous teeth or plates for triturating food
3: the thin-walled sac in front of the gizzard of an earthworm