The process or result of jump-starting a motor vehicle. / (sports) A false start

A winter sport in which skiers ski down a take-off ramp and attempt to jump as far as possible.

(transitive) To start a motor vehicle by passing an electrical current from a charged battery to the discharged ("dead" or "flat") battery of the vehicle being started, by using booster cables to temporarily connect the two batteries in parallel.

A form of exercise where one touches one's toes, then jumps up.

A physical exercise performed by jumping to a position with the legs spread wide and the hands touching overhead and then returning to a position with the feet together and the arms at the sides.

A parachute jump from a fixed point rather than from an aircraft; typically from a tall building, high bridge or rock formation.

(intransitive) To make such a jump.

An instance of bungee jumping.

(intransitive) To participate in bungee jumping.

(sports) To begin a race too soon, before the starting gun goes off. / (idiomatic) To act or begin too soon or without due caution.