peewee

noun5

1. •
   A kind of small marble in children's games.

   • You separate the marbles by color until you have four groups, but then you notice that some of the marbles are regulars, some are shooters, and some are peewees. — 2011
2. •
   (US) A player in a sports league for very young children.

   • Is five too young for peewee football?
3. •
   (informal) A short or small person; a small object.
4. •
   (Australia) A magpie-lark or mudlark (Grallina cyanoleuca).

   • A large flock of black and white peewees—magpie larks—passed over our heads from a patch of mangrove[…]. — 1939
5. •
   (US) A pewee.