1. [n]  the main character in a play by J. M. Barrie; a boy who won't grow up
2. [n]  a boyish or immature man; after the boy in Barrie's play who never grows up

Peter Pan
J. M. Barrie`s famous story of a boy who won`t grow up, and his adventures with Wendy and the lost boys in Neverland.

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