jounce
1. [ verb ] move up and down repeatedly
Synonyms: bounce
Related terms: travel bounce
2. [ noun ] a sudden impact
Synonyms: jolt jar
Examples:

"the door closed with a jolt"

Related terms: bump jolt
Similar spelling:   Jonke
  jones
  Joynes
  Joines
  Johnsie
  Johnsey
  jong
  Jonas
  johns