Blast

1. The ignition of a heavy explosive charge. Syn: shot
2. A miner's term for compressed air underground. Nelson
3. Scot. A fall of water in the downcast shaft to produce or quicken ventilation.
4. A suffix signifying a texture formed entirely by metamorphism. AGI
5. The operation of increasing the diamond exposure on a bit face by removing some of the matrix metal through the abrasive action of grains of sand carried in a high-pressure stream of air. Also called sandblast. Long
6. An increase in firing temperature of a kiln immediately before ending the firing operation.
7. The period during which a blast furnace is in blast; i.e., in operation.

Source: Dictionary of Mining, Mineral, and Related Terms