D defs.my
Entry 3 senses Webster, 1913

blowout

· IPA /ˈbloʊaʊt/
01 n. a gay or lavish festivity.
  1. 1.
    a gay or lavish festivity.[colloq.]
  2. 2.
    the sudden deflation of an inflatable tire due to a puncture or rupture, often accompanied by a bang.
  3. 3.
    the sudden escape of gas or liquid confined under pressure, such as in a gas or oil well, or in a system containing pressurized air or steam.