portal
Concise Oxford English Dictionary © 2008 Oxford University Press:
portal1
▶noun
- 1 a doorway, gate, or gateway, especially a large and imposing one.
- 2 Computing an Internet site providing a directory of links to other sites.
– origin ME: from OFr., from med. L. portale, neut. of portalis ‘like a gate’, from L. porta ‘door, gate’.
Concise Oxford English Dictionary © 2008 Oxford University Press:
portal2
▶adjective Anatomy relating to the transverse fissure of the liver, through which major blood vessels pass.
– origin C19: from mod. L. portalis, from L. porta ‘gate’.
'portal' also found in these Oxford entries:

