jolt

v. 1 disturb or shake (esp. In a moving vehicle) with a jerk. 2 shock; perturb. 3 move along jerkily. n. 1 jerk. 2 surprise or shock.  jolty adj. (-ier, -iest). [origin unknown]

v. i. To shake with short, abrupt risings and fallings, as a carriage moving on rough ground; as, the coach jolts.