#1 blowout n. [runaway, romp, laugher, shoo-in, walkaway] an easy victory. wn
#2 blowout n. a sudden malfunction of a part or apparatus; "the right front tire had a blowout"; "as a result of the blowout we lost all the lights". wn
#3 blowout n. [gala, gala affair, jamboree] a gay festivity. wn
vizzz