Dictionary entry

Jounce

Webster's Dictionary 1913

Jounce (jouns), v. t. & i. [imp. & p. p.Jounced (jounst); p. pr. & vb. n.Jouncing (joun″sĭng).] [Cf. Jaunce.] To jolt; to shake, especially by rough riding or by driving over obstructions.