From Longman Dictionary of Contemporary Englishblow out phrasal verb1 STOP something THAT IS HAPPENINGif you blow a flame or a fire out, or if it blows out, it stops burning The match blew out in the wind.blow something ↔ out Blow out all the candles.2 TTCif a tyre blows out, it bursts3 blow itself outDNFINISH/COME TO AN END if a storm blows itself out, it ends4 blow your/somebody’s brains out to kill yourself, or someone else, with a shot to the head5 BEAT/DEFEAT blow somebody ↔ out American English spoken to easily defeat someone We blew them out 28–0. 6 American English if you blow out your knee or another joint in your body, or if it blows out, you injure it badly7 TPGif an oil or gas well blows out, oil or gas suddenly escapes from it8 blow somebody ↔ out to stop having a friendship or relationship with someone → blow→ See Verb table
Examples from the Corpus
blow out• We tried to light a fire but the wind kept blowing it out.• You have to blow out all the candles or your wish won't come true.• He blew out the candle and went to sleep.blow itself out• She could do nothing but batten down the conversational hatches and wait until the storm blew itself out.• The morning of the third day, they woke up and saw the storm had blown itself out.• This storm was not going to blow itself out in an hour - not even for him.• Next morning dawns bright and clear; the storm has blown itself out in the night.• The storm had blown itself out, leaving the sky pearly.• The storm had blown itself out, there was only steady drizzle.• They had waited for the Darkfall to blow itself out, which it did in spectacular fashion.• Governments were paralysed, hoping the storm would blow itself out without affecting their friends and families and favourite projects.blow your/somebody’s brains out• There was a mercury pool for losers to reflect in while they blew their brains out.• In a few years you will blow your brains out, a bankrupt.• The bullet took him right between the eyes, blowing his brains out through the back of his head.• Hunting rabbits with hawks is surely better than blowing their brains out with shotguns. 