Vena \Ve"na\, n.; pl. {Venae}. [L. See {Vein}.]
A vein.
[1913 Webster]
{Vena cava}; pl. {Venae cavae}. [L., literally, hollow vein.]
(Anat.) Any one of the great systemic veins connected
directly with the heart.
{Vena contracta}. [L., literally, contracted vein.]
(Hydraulics) The contracted portion of a liquid jet at and
near the orifice from which it issues.
{Vena portae}; pl. {Venae portae}. [L., literally, vein of
the entrance.] (Anat.) The portal vein of the liver. See
under {Portal}.
[1913 Webster]