portal

A doorway, entrance, or gate, especially one that is large and imposing.

An entrance or a means of entrance.

The portal vein.

A website considered as an entry point to other websites, often by being or providing access to a search engine.

Of or relating to the portal vein or the portal system.

Of or relating to a point of entrance to an organ, especially the transverse fissure of the liver, through which the blood vessels enter.

In anatomy: Pertaining to the hepatic porta, or great transverse fissure of the liver.

Pertaining to the vena portæ, or portal vein.

A door or gate; an entrance or opening for passage; specifically, the entire architectural treatment of the entrance and its surroundings of a great or splendid building, as a cathedral.

A square corner of a room separated from the rest by a wainscot, and forming a short passage or vestibule.