Informal. to boast; brag: He kept blowing about his medals.
8.
Zoology. (of a whale) to spout.
9.
(of a fuse, light bulb, vacuum tube, tire, etc.) to burst, melt, stop functioning, or be destroyed by exploding, overloading, etc. (often followed by out): A fuse blew just as we sat down to dinner. The rear tire blew out.
10.
to burst from internal pressure: Poorly sealed cans will often blow.
to cause to sound, as by a current of air: Blow your horn at the next crossing.
18.
Jazz. to play (a musical instrument of any kind).
19.
to cause to explode (often followed by up, to bits, etc.): A mine blew the ship to bits.
20.
to burst, melt, burn out, or destroy by exploding, overloading, etc. (often followed by out): to blow a tire; blow a fuse.
21.
to destroy; demolish (usually followed by down, over, etc.): The windstorm blew down his house.
22.
Informal.
a.
to spend money on.
b.
to squander; spend quickly: He blew a fortune on racing cars.
c.
to waste; lose: The team blew the lead by making a bad play.
23.
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!
"hard hit," mid-15c., blowe, from northern and East Midlands dialects, perhaps from M.Du. blouwen "to beat," a common Germanic word of unknown origin (cf. Ger. bleuen, Goth. bliggwan "to strike"). Influenced in English by blow (v.1).
tv. to ruin or waste something. : I had a chance to do it, but I blew it.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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