Vĕn'tral, a.
a. [Fr. & Sp. ventral, It. ventrale, Lat. ventralis, from venter, the belly.]
Sense 1. Belonging to the belly, or the surface of the body opposite to the back, or dorsal side; — in fishes, sometimes restricted to the part of this surface anterior to the anus; as, ventral fins.
Sense 2. (Bot.) Of, or pertaining to, that side of an organ, &c., which faces toward the center of a flower.
Gray.
Ventral fin, in fishes, a fin between the anus and the throat. [See Illust. of Fin.]