noun
1. : blast 5b
2. : a compressional wave formed whenever the speed of a body relative to a medium exceeds that at which the medium can transmit sound and characterized by a disturbed region of small but finite thickness within which very abrupt changes occur in the pressure, density, and velocity of the medium
passage of a shock wave (from an explosion … or from the leading wing edge of a supersonic airplane) through a compressible fluid such as air — Fortune