From WordNet (r) 3.0 (2006):
girl
n 1: a young woman; "a young lady of 18" [syn: girl, miss,
missy, young lady, young woman, fille]
2: a youthful female person; "the baby was a girl"; "the girls
were just learning to ride a tricycle" [syn: female child,
girl, little girl] [ant: boy, male child]
3: a female human offspring; "her daughter cared for her in her
old age" [syn: daughter, girl] [ant: boy, son]
4: a girl or young woman with whom a man is romantically
involved; "his girlfriend kicked him out" [syn: girlfriend,
girl, lady friend]
5: a friendly informal reference to a grown woman; "Mrs. Smith
was just one of the girls"