(Internet) A website or page that acts as an entrance to other websites or pages on the Internet.
(anatomy) A short vein that carries blood into the liver.
(fiction) A magical or technological doorway leading to another location, period in time or dimension.
(architecture) A lesser gate, where there are two of different dimensions.
(architecture) Formerly, a small square corner in a room separated from the rest of an apartment by wainscoting, forming a short passage to another apartment.