n. In the coiled nautiloid cephalopod shell, such as Nautilus and the ammonites, the outer or peripheral portion of the whorls.n. One who vents or gives vent (to); one who utters, reports, or publishes.n. The womb; and hence, in legal language, mother: as, A has a son B by one venter, and a daughter C by another venter; children by different venters.n. In anatomy and zoology the belly; the abdomen. n. Tn ornithology, the lower belly or abdomen, considered as to its surface.n. In entomology: The lower part of the abdomen.n. The under surface: as, the venter of the caterpillar.n. In botany, the enlarged basal part of an archegonium, in which the oöphore is formed.