bunny hop

Short definition from Wiktionary

Noun

1. 1
   A dance from the big band era, a variation of the conga, in which dancers made small jumps with feet together.
2. 2
   A jump made where both wheels leave the ground.
3. 3
   A ground ball that hops along the field instead of rolling.
4. 4
   An exercise whereby the person crouches on their haunches and then extends their legs and springs up, jumping vertically into the air like a rabbit hopping.

Verb

1. 1
   to jump repeatedly while making contact with ground for as little time as possible, often combined with air strafing, especially in first-person shooters.
2. 2
   Alternative form of bunny-hop.
3. 3
   To make a jump where both wheels leave the ground
4. 4
   To cause a car or truck to move forward jerkily by incorrect use of the clutch.