(of the wind or air) to be in motion.

to move along, carried by or as by the wind

Dust seemed to blow through every crack in the house.

to produce or emit a current of air, as with the mouth or a bellows

Blow on your hands to warm them.

(of a horn, trumpet, etc.) to give out sound.

to make a blowing sound; whistle

The siren blew just as we rounded the corner.

(of horses) to breathe hard or quickly; pant.

Informal . to boast; brag

He kept blowing about his medals.

Zoology . (of a whale) to spout.

(of a fuse, light bulb, vacuum tube, tire, etc.) to burst, melt, stop functioning, or be destroyed by exploding, overloading, etc. (often fol. by out )

A fuse blew just as we sat down to dinner. The rear tire blew out.

to burst from internal pressure

Poorly sealed cans will often blow.

Slang . to leave; depart.

to drive by means of a current of air

A sudden breeze blew the smoke into the house.

to spread or make widely known

Growing panic blew the rumor about.

to drive a current of air upon.

to clear or empty by forcing air through

Try blowing your nose.

to shape (glass, smoke, etc.) with a current of air

to blow smoke rings.

to cause to sound, as by a current of air

Blow your horn at the next crossing.

Jazz . to play (a musical instrument of any kind).

to cause to explode (often fol. by up, to bits, etc.)

A mine blew the ship to bits.

to burst, melt, burn out, or destroy by exploding, overloading, etc. (often fol. by out )

to blow a tire; blow a fuse.

to destroy; demolish (usually fol. by down, over, etc.)

The windstorm blew down his house.

Informal .

to spend money on.

to squander; spend quickly

He blew a fortune on racing cars.

to waste; lose

The team blew the lead by making a bad play.

Informal . to mishandle, ruin, botch; make a mess of; bungle

With one stupid mistake he blew the whole project. It was your last chance and you blew it!

Slang . to damn

Blow the cost!

to put (a horse) out of breath by fatigue.

Slang . to depart from

to blow town.

Slang

Vulgar to perform fellatio on.

Slang . to smoke (marijuana or other drugs).

a blast of air or wind

to clean machinery with a blow.

Informal . a violent windstorm, gale, hurricane, or the like

one of the worst blows we ever had around here.

an act of producing a blast of air, as in playing a wind instrument

a few discordant blows by the bugler.

Metallurgy .

a blast of air forced through a converter, as in the production of steel or copper.

the stage of the production process during which this blast is used.

Civil Engineering . boil 1 ( def. 12 ) .

Slang . cocaine. ?

blow away, Slang .

to kill, esp. by gunfire

The gang threatened to blow away anyone who talked to the police.

to defeat decisively; trounce

She blew her opponent away in three straight sets.

to overwhelm with emotion, astonishment, etc.

Good poetry just blows me away.

blow down, Metallurgy . to suspend working of (a blast furnace) by smelting the existing charge with a diminishing blast.

blow in,

Slang . to arrive at a place, esp. unexpectedly

My uncle just blew in from Sacramento.

Metallurgy . to begin operations in (a blast furnace).

blow out,

to become extinguished

The candles blew out at once.

to lose force or cease

The storm has blown itself out.

(of an oil or gas well) to lose oil or gas uncontrollably.

Metallurgy . to blow down and clean (a blast furnace) in order to shut down.

blow over,

to pass away; subside

The storm blew over in five minutes.

to be forgotten

The scandal will eventually blow over.

blow up,

to come into being

A storm suddenly blew up.

to explode

The ship blew up.

to cause to explode

to blow up a bridge.

to exaggerate; enlarge

He blew up his own role in his account of the project.

Informal . to lose one's temper

When he heard she had quit school, he blew up.

to fill with air; inflate

to blow up a tire.

Photography . to make an enlarged reproduction of.

Mathematics . (of a function) to become infinite. ?

blow hot and cold

to favor something at first and reject it later on; waver; vacillate

His enthusiasm for the job blows hot and cold.

blow off

to allow steam to be released.

Informal . to reduce or release tension, as by loud talking.

blow one's cool, Slang . to lose one's composure; become angry, frantic

or flustered.

blow one's cover. cover ( def. 53 ) .

blow one's lines

Theater . to forget or make an error in a speaking part or stage directions.

blow one's mind. mind ( def. 35 ) .

blow one's stack. stack ( def. 23 ) .

blow one's top. top 1 ( def. 42 ) .

verb

deflate , let out , shrink , shrivel , ignore , let go , be calm

verb

billow , bloat , distend , enlarge , expand , fill , inflate , puff up , pump up , swell , blast , bomb , burst , detonate , dynamite , erupt , go off , mushroom , rupture , shatter , exaggerate , heighten , overstate , become angry , become enraged , go off the deep end , hit the roof , lose control , lose temper , rage , rave , blow