Definition of blowout noun from the Oxford Advanced American Dictionary
blowout
noun
/ˈbloʊaʊt/
1an occasion when a tire suddenly bursts on a vehicle while it is movingsynonympunctureto have a blowout2[usually singular] (informal) a large meal at which people eat too mucha four-course blowout3(informal) a large party or social occasionWe're going to have a huge blowout for Valentine's Day.4(informal) an easy victoryThe 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