fuzzball

Short definition from Wiktionary

Noun

1. 1
   A ball of fuzzy material.
2. 2
   Any soft, fuzzy creature.
3. 3
   A quantum description of a black hole in superstring theory.
4. 4
   A puffball.
5. 5
   An informal American street game resembling baseball.
6. 6
   Synonym of pill (“ball of fibers formed on the surface of a textile fabric by rubbing”).