Of the nature of a vein (vein, n. 4a); of or relating to a vein or veins; = venous, adj. 2a. Cf. venal, adj.1

Of, relating to, or of the nature of a vein; containing a vein or veins; venous.

Of the nature of a vein; of or relating to a vein or veins; = venous, adj. 2a. Now rare.

Designating the part of the circulatory system which consists of veins (in contrast with that consisting of arteries). Chiefly in venous system.

Designating the part of the circulatory system that consists of veins; = venous, adj. 2b. Now rare.

Existing or taking place within a vein or the veins.