(使)震动,摇撼,(使)颠簸摇动,震动
Jounce \Jounce\, v. t. & i. [imp. & p. p. {Jounced}; p. pr. & vb. n. {Jouncing}.] [Cf. {Jaunce}.] To jolt; to shake, especially by rough riding or by driving over obstructions. Jounce \Jounce\, n. A jolt; a shake; a hard trot.
jounce n : a sudden impact; "the door closed with a jolt" [syn: {jolt}, {jar}] v : move up and down repeatedly [syn: {bounce}]