n. 一阵风, 爆炸, 枯萎病

vt. 炸, 使枯萎

vi. 炸, 猛攻, 猛烈抨击, 枯萎

[化] 鼓风

[医] 胚细胞, 未成熟细胞, 分裂球丝(分裂球间的丝状纺锤体), 冲击波, 气浪

Blast \Blast\ (bl[.a]st), n. [AS. bl[=ae]st a puff of wind, a
blowing; akin to Icel. bl[=a]str, OHG. bl[=a]st, and fr. a
verb akin to Icel. bl[=a]sa to blow, OHG. bl[^a]san, Goth.
bl[=e]san (in comp.); all prob. from the same root as E.
blow. See {Blow} to eject air.]
1. A violent gust of wind.

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.

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.

Note: 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.

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.

4. The sound made by blowing a wind instrument; strictly, the
sound produces at one breath.

One blast upon his bugle horn
Were worth a thousand men. --Sir W.
Scott.

The blast of triumph o'er thy grave. --Bryant.

5. A sudden, pernicious effect, as if by a noxious wind,
especially on animals and plants; a blight.

By the blast of God they perish. --Job iv. 9.

Virtue preserved from fell destruction's blast.
--Shak.

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.

7. A flatulent disease of sheep.

{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.]


Blast \Blast\, v. i.
1. To be blighted or withered; as, the bud blasted in the
blossom.

2. To blow; to blow on a trumpet. [Obs.]

Toke his blake trumpe faste
And gan to puffen and to blaste. --Chaucer.


Blast \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.

Seven thin ears, and blasted with the east wind.
--Gen. xii. 6.

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.

I'll cross it, though it blast me. --Shak.

Blasted with excess of light. --T. Gray.

3. To confound by a loud blast or din.

Trumpeters,
With brazen din blast you the city's ear. --Shak.

4. To rend open by any explosive agent, as gunpowder,
dynamite, etc.; to shatter; as, to blast rocks.