jailbait

[ jeyl-beyt ]
/ ˈdʒeɪlˌbeɪt /

noun Slang.

a girl with whom sexual intercourse is punishable as statutory rape because she is under the legal age of consent.

Origin of jailbait

An Americanism dating back to 1930–35; jail + bait

British Dictionary definitions for jail bait

jailbait
/ (ˈdʒeɪlˌbeɪt) /

noun

slang a young woman, or young women collectively, considered sexually attractive but below the age of consent