Portal - Definition

n 1: a grand and imposing entrance (often extended
metaphorically); "the portals of the cathedral"; "the
portals of heaven"; "the portals of success"
2: 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." [syn: portal site,
portal]
3: a short vein that carries blood into the liver [syn: portal
vein, hepatic portal vein, portal, vena portae]