n.1.  A female child.
2.  A daughter: our youngest girl.
3.  Often Offensive   A woman.
4.  Informal  a.  A woman socializing with a group of women: a night out with the girls.
b.  Used as a familiar form of address to express support of or camaraderie with a woman.
 5.  Informal   A female sweetheart: cadets escorting their girls to the ball.
6.  Offensive   A female servant or employee.