Jolt or bounce:[no object]:the car jounced wildly[with object]:the pilot jounced the ship through turbulence...
The springs creak, mattress jouncing as he resettles his weight.
With each step her blond head jounced slightly.
Cyril stooped and picked up a handful of small pebbles and jounced them in his hand to shake away the loose dust, then the resumed their leisurely walk along the track.
Derivatives
jouncy
adjective
Origin
Late Middle English: probably symbolic; compare with bounce.