v. & n.
—v.
1 tr. & intr. munch or chew noisily.
2 tr. (of a horse etc.) work (the bit) noisily between the teeth.
3 intr. fret with impatience (is champing to be away).
—n. a chewing noise or motion.
Phrases and idioms:
champ at the bit be restlessly impatient.
Etymology: prob. imit.
2.
n. sl. a champion.
Etymology: abbr.
Useful english dictionary. 2012.