To fire an explosive missile at your feet whilst jumping, the act of which makes you accelerate quickly upwards. You must jump whilst doing this, because otherwise you will not gain much speed upwards and will inflict a lot more damage on yourself. Timing is important.
I rocket jumped on to my garage roof.
by Dr Ian April 10, 2003
2 more definitions
The process of using rockets to achieve added height when jumping in a game of Quake.
"Got to the Quad Damage via a well timed rocket jump."
by Mad Walrus August 06, 2002
To propel yourself into the air by fire a rocket into the ground in a video game.
Last night when I was playing TF2 I did an insane rocket jump over the map!
by Rozzabozz February 15, 2015