1. 
2. 
[syn: girlfriend, girl, lady friend]
The Collaborative International Dictionary of English v.0.48:
girlfriend \girl"friend`\ n.
   1. any female friend; as, Mary and her girlfriend organized
      the party. [WordNet sense 1]
      [WordNet 1.5]
   2. a girl or young woman with whom a man is romantically
      involved; as, his girlfriend kicked him out. [WordNet
      sense 2]
   Syn: girl, lady friend.
        [WordNet 1.5]
WordNet (r) 3.0 (2006):
girlfriend
    n 1: any female friend; "Mary and her girlfriend organized the
         party"
    2: a girl or young woman with whom a man is romantically
       involved; "his girlfriend kicked him out" [syn: girlfriend,
       girl, lady friend]