Meaning

noun a juvenile between the onset of puberty and maturity

adjective being of the age 13 through 19

originFrom Middle English tenen, tinen, from Old English tȳnan (“to fence, inclose, shut, close”), from Proto-West Germanic *tūnijan, from Proto-West Germanic *tūn, from Proto-Germanic *tūną (“fence, enclosure”). Doublet of tine. Cognate with Dutch tuinen, German zäunen. Related to English town.

Etymology from Wiktionary, CC BY-SA 3.0