Could be a fruit.
But also a nickname for one who is intelligent, dilligent, and beautiful from every angle.
Peaches often grow quicker than everyone else, and their smarter than they look. If you meet a Peach prepare to be mind blown!
(Mostly just a nickname for females)
Charles: "See that girl?
Eddy: "Yeah? What about her?"
Charles: "She looks easy, I bet I could get with her by tonight!"
Eddy: "Yeah right, I know her. That girl is a Peach. Keep your distance!"
Charles: "Oh. Damnit!"