Noun: rectal vein
- Any of several veins draining the walls of the anal canal and rectum
"Hemorrhoids are caused by swollen rectal veins";
- hemorrhoidal vein [N. Amer], vena rectalis, haemorrhoidal vein [Brit, Cdn]
Derived forms: rectal veins
Type of: vein, vena, venous blood vessel
Encyclopedia: Rectal vein