champ 1 
(chămp)
(chămp)v. champed, champ·ing, champs
v.tr.
To bite or chew upon noisily.
v.intr.
Idiom: To work the jaws and teeth vigorously.
champ at the bit
To show impatience at being held back or delayed. See Usage Note at chomp.
[Probably imitative.]
- under the counter
- under-the-counter
- under the gun
- under the hammer
- under the influence
- under the knife
- under the rose
- under the skin
- under the sun
- under the table
- under-the-table
- under the weather
- under the wind
- under the wire
- underthings
- under thumb
- undertint
- undertone
- undertook
- undertow
- undertrick
- undertrump
- underuse
- undervaluation
- undervalue