big girl

noun4

1. •
   (informal) An older girl; a girl who is no longer an infant; a female child considered mature enough for a specified purpose.

   • You can tie your own shoelaces – you're a big girl now.
2. •
   (informal) An adult woman; a woman behaving as a responsible adult.

   • Just put on your big-girl panties and make a choice.
3. •
   A woman who is overweight.

   • I was surprised he didn't take the straight line Camryn fed him about "Do you like big girls?" — 1999
4. •
   (informal, offensive) A timid, weak or effeminate boy or man.

   • Stop crying, you big girl!