champ
Concise Oxford English Dictionary © 2008 Oxford University Press:
champ1
▶verb
- 1 munch enthusiastically or noisily.
■ (of a horse) make a noisy biting or chewing action.
- 2 fret impatiently.
– phrases
champ (or chafe) at the bit be restlessly impatient to start doing something.
champ (or chafe) at the bit be restlessly impatient to start doing something.
– origin ME: prob. imitative.
Concise Oxford English Dictionary © 2008 Oxford University Press:
champ2
▶noun informal a champion.
'champ' also found in these Oxford entries:

