champ

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To bite or chew upon noisily. See Synonyms at bite.
2. v. To work the jaws and teeth vigorously.
3. idiom. champ at the bit To show impatience at being held back or delayed.
4. n. Informal A champion.

Century Dictionary and Cyclopedia

1. To bite repeatedly and impatiently, as a horse his bit.
2. To bite into small pieces; craunch; chew; munch: sometimes followed by up.
3. To pound; crush; mash: as, to champ potatoes.
4. To perform the action of biting repeatedly and impatiently: generally followed by on or upon.
5. n. The act of biting repeatedly, as a horse on his bit.
6. n. Mashed potatoes.
7. n. A field. Specifically— In architecture, a field or ground on which carving is raised. Oxford Glossary.
8. n. In lace-making: The ground upon which the pattern is embroidered or applied. The filling of brides or links between the figures of the pattern of lace that has no ground or bottom.
9. n. The name given to a valuable timber, the product of Michelia excelsa, a tall magnoliaceous tree of the eastern Himalaya. The wood is soft but very durable, and of an olive-brown color.
10. Hard; firm: as, a good champ road.

Wiktionary

1. n. countable shortened form of champion
2. n. Ireland, uncountable a meal of mashed potatoes and scallions
3. v. To bite or chew, especially noisily or impatiently.
4. n. informal Champagne.
5. n. architecture The field or ground on which carving appears in relief.

GNU Webster's 1913

1. v. To bite with repeated action of the teeth so as to be heard.
2. v. To bite into small pieces; to crunch.
3. v. To bite or chew impatiently.
4. n. (Arch.) The field or ground on which carving appears in relief.

WordNet 3.0

1. n. someone who has won first place in a competition
2. v. chafe at the bit, like horses
3. v. chew noisily