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BLAST - Definiția din dicționar

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Blast (bl&adot_;st), n. [AS. bl&aē_;st a puff of wind, a blowing; akin to Icel. bl&ā;str, OHG. bl&ā;st, and fr. a verb akin to Icel. bl&ā;sa to blow, OHG. blâsan, Goth. bl&ē;san (in comp.); all prob. from the same root as E. blow. See Blow to eject air.] 1. A violent gust of wind.
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And see where surly Winter passes off,
Far to the north, and calls his ruffian blasts;
His blasts obey, and quit the howling hill. Thomson.
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2. A forcible stream of air from an orifice, as from a bellows, the mouth, etc. Hence: The continuous blowing to which one charge of ore or metal is subjected in a furnace; as, to melt so many tons of iron at a blast.
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&hand_; The terms hot blast and cold blast are employed to designate whether the current is heated or not heated before entering the furnace. A blast furnace is said to be in blast while it is in operation, and out of blast when not in use.
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3. The exhaust steam from and engine, driving a column of air out of a boiler chimney, and thus creating an intense draught through the fire; also, any draught produced by the blast.
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4. The sound made by blowing a wind instrument; strictly, the sound produces at one breath.
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One blast upon his bugle horn
Were worth a thousand men. Sir W. Scott.
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The blast of triumph o'er thy grave. Bryant.
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5. A sudden, pernicious effect, as if by a noxious wind, especially on animals and plants; a blight.
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By the blast of God they perish. Job iv. 9.
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Virtue preserved from fell destruction's blast. Shak.
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6. The act of rending, or attempting to rend, heavy masses of rock, earth, etc., by the explosion of gunpowder, dynamite, etc.; also, the charge used for this purpose. “Large blasts are often used.” Tomlinson.
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7. A flatulent disease of sheep.
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Blast furnace, a furnace, usually a shaft furnace for smelting ores, into which air is forced by pressure. -- Blast hole, a hole in the bottom of a pump stock through which water enters. -- Blast nozzle, a fixed or variable orifice in the delivery end of a blast pipe; -- called also blast orifice. -- In full blast, in complete operation; in a state of great activity. See Blast, n., 2. [Colloq.]
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Blast, v. t. [imp. & p. p. Blasted; p. pr. & vb. n. Blasting.] 1. To injure, as by a noxious wind; to cause to wither; to stop or check the growth of, and prevent from fruit-bearing, by some pernicious influence; to blight; to shrivel.
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Seven thin ears, and blasted with the east wind. Gen. xii. 6.
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2. Hence, to affect with some sudden violence, plague, calamity, or blighting influence, which destroys or causes to fail; to visit with a curse; to curse; to ruin; as, to blast pride, hopes, or character.
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I'll cross it, though it blast me. Shak.
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Blasted with excess of light. T. Gray.
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3. To confound by a loud blast or din.
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Trumpeters,
With brazen din blast you the city's ear. Shak.
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4. To rend open by any explosive agent, as gunpowder, dynamite, etc.; to shatter; as, to blast rocks.
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Blast, v. i. 1. To be blighted or withered; as, the bud blasted in the blossom.
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2. To blow; to blow on a trumpet. [Obs.]
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Toke his blake trumpe faste
And gan to puffen and to blaste. Chaucer.
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