The Collaborative International Dictionary of English v.0.48:

-blast \-blast\ [Gr. blasto`s sprout, shoot.]
   A suffix or terminal formative, used principally in
   biological terms, and signifying growth, formation; as,
   bioblast, epiblast, mesoblast, etc.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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.
      [1913 Webster]

            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.
      [1913 Webster]

   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.
      [1913 Webster]

   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.
         [1913 Webster]

   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.
      [1913 Webster]

   4. The sound made by blowing a wind instrument; strictly, the
      sound produces at one breath.
      [1913 Webster]

            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.
      [1913 Webster]

   5. A sudden, pernicious effect, as if by a noxious wind,
      especially on animals and plants; a blight.
      [1913 Webster]

            By the blast of God they perish.      --Job iv. 9.
      [1913 Webster]

            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.
      [1913 Webster]

   7. A flatulent disease of sheep.
      [1913 Webster]

   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.]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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.
      [1913 Webster]

            Seven thin ears, and blasted with the east wind.
                                                  --Gen. xii. 6.
      [1913 Webster]

   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.
      [1913 Webster]

            Trumpeters,
            With brazen din blast you the city's ear. --Shak.
      [1913 Webster]

   4. To rend open by any explosive agent, as gunpowder,
      dynamite, etc.; to shatter; as, to blast rocks.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Blast \Blast\, v. i.
   1. To be blighted or withered; as, the bud blasted in the
      blossom.
      [1913 Webster]

   2. To blow; to blow on a trumpet. [Obs.]
      [1913 Webster]

            Toke his blake trumpe faste
            And gan to puffen and to blaste.      --Chaucer.
      [1913 Webster]

WordNet (r) 3.0 (2006):

blast
    n 1: a very long fly ball
    2: a sudden very loud noise [syn: bang, clap, eruption,
       blast, bam]
    3: a strong current of air; "the tree was bent almost double by
       the gust" [syn: gust, blast, blow]
    4: an explosion (as of dynamite)
    5: a highly pleasurable or exciting experience; "we had a good
       time at the party"; "celebrating after the game was a blast"
       [syn: good time, blast]
    6: intense adverse criticism; "Clinton directed his fire at the
       Republican Party"; "the government has come under attack";
       "don't give me any flak" [syn: fire, attack, flak,
       flack, blast]
    v 1: make a strident sound; "She tended to blast when speaking
         into a microphone" [syn: blast, blare]
    2: hit hard; "He smashed a 3-run homer" [syn: smash, nail,
       boom, blast]
    3: use explosives on; "The enemy has been shelling us all day"
       [syn: blast, shell]
    4: apply a draft or strong wind to to; "the air conditioning was
       blasting cold air at us"
    5: create by using explosives; "blast a passage through the
       mountain" [syn: blast, shell]
    6: make with or as if with an explosion; "blast a tunnel through
       the Alps"
    7: fire a shot; "the gunman blasted away" [syn: blast,
       shoot]
    8: criticize harshly or violently; "The press savaged the new
       President"; "The critics crucified the author for
       plagiarizing a famous passage" [syn: savage, blast,
       pillory, crucify]
    9: shatter as if by explosion [syn: blast, knock down]
    10: shrivel or wither or mature imperfectly

The Free On-line Dictionary of Computing (19 January 2023):

blast

   1. BLT, used especially for large data sends over a network
   or comm line.  Opposite of snarf.  Usage: uncommon.  The
   variant "blat" has been reported.

   2. [HP/Apollo] Synonymous with nuke.  Sometimes the message
   "Unable to kill all processes.  Blast them (y/n)?"  would
   appear in the command window upon logout.

   3. The Jargon File (version 4.4.7, 29 Dec 2003):