3. (n) loud explosion
4. (n) great time
2. one false move and i will blast like the very first time...oh lord; i told you not to move, you dumb broad!
3. did you hear that blast come from over there?
4. i had a blast at your moms house last night.
A slang word used as an expetive. An exclamation to say that something you didn't want to happen happened.
A good time.
"BLAST!" I exclaimed before my mother admonished me and sent me to my room.
Shelly and I went to the My Chemical Romance concert and had a blast!
The blast of the bomb blew up half the city block and killed fifteen people.