portal1
  
  n.
  - a doorway, gate, or gateway, especially a large and imposing one.
 - Computing  an Internet site providing a directory of links to other sites.
 
 
  Etymology
  ME: from OFr., from med. L. portale, neut. of portalis ‘like a gate’, from L. porta ‘door, gate’.
 
  
    
portal2
  
  adj.
 Anatomy  relating to the transverse fissure of the liver, through which major blood vessels pass.
 
  Etymology
  C19: from mod. L. portalis, from L. porta ‘gate’.