I. verb (~d; jouncing) Etymology: Middle English Date: 15th century intransitive verb to move in an up-and-down manner ; bounce , transitive verb to cause to ~, II. noun Date: circa 1787 jolt
JOUNCE
Meaning of JOUNCE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012