- 1an occasion when a tire suddenly bursts on a vehicle while it is moving synonym puncture to have a blowout
- 2[usually singular] (informal) a large meal at which people eat too much a four-course blowout
- 3 (informal) a large party or social occasion We're going to have a huge blowout for Valentine's Day.
- 4 (informal) an easy victory The game was a blowout, 8–1. Utah had its fourth blowout victory over San Antonio.
- 5a sudden escape of oil or gas from an oil well