ventral (Adjective) — Toward or on or near the belly (front of a primate or lower surface of a lower animal). ex. "the ventral aspect of the human body" ex. "the liver is somewhat ventral in position" ex. "ventral (or pelvic) fins correspond to the hind limbs of a quadruped"
ventral (Adjective) — (biology) nearest to or facing toward the axis of an organ or organism. ex. "the upper side of a leaf is known as the ventral surface"