'bronc' definitions:

Definition of 'bronc'

From: WordNet
noun
An unbroken or imperfectly broken mustang [syn: bronco, bronc, broncho]

Definition of 'bronc'

From: GCIDE
  • bronc \bronc\ n. an unbroken or imperfectly broken mustang.
  • Syn: bronco, broncho. [WordNet 1.5]