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1. To be extremely loud. If grandma's TV is blasting away, gently remind her to put in her hearing aids.
2. To vehemently criticize someone or something. The senator's disgusted constituents blasted away at him during the town hall meeting.
1. To shoot upward from the ground, as of a rocket. The rocket blasted off successfully and is now headed for the moon. My kids love blasting off toy rockets in the backyard and seeing how high they'll go.
2. To ignite an exploding device, such as fireworks. Our poor dog is hiding under the bed because our neighbors celebrate the Fourth of July by blasting off tons of fireworks.
3. To use an explosion to destroy or remove something. After the emergency crew blasted off some rocks, they were able to free the trapped hikers from the cave.
4. To amputate by means of an explosion. I'm really worried my fool husband is going to blast off a hand while playing with those fireworks!
5. To depart very quickly. The robbers blasted off when they heard the approaching sirens.
6. To strike with a lot of force in order to remove something, as with a pressure washer or sandblaster. In this usage, a noun can be used between "blast" and "off." The sidewalk looks so clean this morning! I guess someone from the township blasted all the stains off of it. We can blast off that graffiti with the pressure washer.