'chin-up' definitions:

Definition of 'chin-up'

From: WordNet
noun
An arm exercise performed by pulling yourself up on a horizontal bar until your chin is level with the bar [syn: pull-up, chin-up]

Definition of 'chin-up'

From: GCIDE
  • chin-up \chin-up\ n. an arm exercise performed by pulling oneself up on a horizontal bar until the chin is level with or above the bar. [WordNet 1.5] chin-wag