To jounce is to bump and jolt up and down. Jounce over the ruts, jouncing along, a jouncing ride.
It is chiefly American now and describes the movement of a vehicle on bad ground. In suspension design it is a technical term for the upward travel of a wheel, with rebound for the other direction.
1verbjounceTo bump and jolt up and down.
“The old bus jounced along the dirt track, throwing us out of our seats.”
jounce is a jolting.
Late Middle English jouncen means to jolt violently, of unknown further origin.
Middle English
*jouncen — to jolt violently
English, today
jounce
Built from
The is derived from Late Middle English jouncen (“to jolt violently”) (evidenced by jouncinge (“violent jolting movement”)); further etymology unknown, possibly. The is probably derived from the verb as it is attested later.
Etymology from Wiktionary, CC BY-SA
Practised in A Song of Ice and Fire