Meaning

adjective being of the age 13 through 19

noun a juvenile between the onset of puberty and maturity

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