Noun

• S: (n) portal (a grand and imposing entrance (often extended metaphorically)) "the portals of the cathedral"; "the portals of heaven"; "the portals of success"
• S: (n) portal site, portal (a site that the owner positions as an entrance to other sites on the internet) "a portal typically has search engines and free email and chat rooms etc."
• S: (n) portal vein, hepatic portal vein, portal, vena portae (a short vein that carries blood into the liver)