(informal) A short or small person; a small object.
A kind of small marble in children's games.
(US, sports) A player in a sports league for very young children.
Is five too young for peewee football?
1971 November, Pat Strange, Mini Judoka in Aussie Ladies Tourney, Black Belt, page 61,
Each year, younger and younger girls line up for competition on the mats, and at this year′s Western Australia Women′s Judo Tournament extra peewee divisions were added to accomodate the young ladies.
noun
(Australia, New South Wales and Queensland) A magpie-lark or mudlark (Grallina cyanoleuca).