jailbait

1. Stay away from Mary, she is a jailbait.
   别碰玛丽，她还是个未成年的小姑娘。

jail.bait

n.Slang （名词）【俚语】
A person below the age of consent with whom sexual intercourse can constitute statutory rape.
祸水妞儿，未成年少女：指其小于同意年龄、一经与之发生性关系即在法律上构成强奸的女人