- air forced into a furnace by a blower to increase the rate of combustion.
- a jet of steam directed up a smokestack, as of a steam locomotive, to increase draft.
- a draft thus increased.
- a party or riotously good time: Did we have a blast last night!
- something that gives great pleasure or enjoyment; thrill; treat: My new electronic game is a blast.
verb (used with object)
verb (used without object)
- (of a rocket) to leave a launch pad under its own power.
- (of an astronaut) to travel aloft in a rocket.
Origin of blast
Related formsblast·er, nounblast·y, adjective
British Dictionary definitions for blast off
- the rapid movement of air away from the centre of an explosion, combustion of rocket fuel, etc
- a wave of overpressure caused by an explosion; shock wave
Derived Formsblaster, noun
Word Origin for blast
Idioms and Phrases with blast off (1 of 2)
Also, blast away. Take off or be launched, especially into space, as in They're scheduled to blast off on Tuesday. This usage originated with the development of powerful rockets, spacecraft, and astronauts, to all of which it was applied. [c. 1950]
Depart, clear out, as in This party's over; let's blast off now. [Slang; early 1950s]
Become excited or high, especially from using drugs, as in They give parties where people blast off. [Slang; c. 1960]
Idioms and Phrases with blast off (2 of 2)
In addition to the idiom beginning with blast
- blast off
- full blast