a friendly informal reference to a grown woman
"Mrs. Smith was just one of the girls"
a girl or young woman with whom a man is romantically involved
"his girlfriend kicked him out"
- lady friend
a female human offspring
"her daughter cared for her in her old age"
a youthful female person
"the baby was a girl"
"the girls were just learning to ride a tricycle"
- female child - little girl
a young woman
"a young lady of 18"
- young lady - young woman