(Of a military campaign) begin: the air-attack phase will continue before the ground attack jumps off
More example sentences
- On the morning of 13 May, the 6th Marine Division attack was scheduled to jump off at 0730.
- The attack jumped off six hours later.
- The final assault jumped off at 1515 from a crossroads 500 yards south of Clochimont.
Definition of jump off in:
- The British & World English dictionary