\Blow"er\, n.
1. One who, or that which, blows.
2. (Mech.) A device for producing a current of air; as:
   (a) A metal plate temporarily placed before the upper part
       of a grate or open fire.
   (b) A machine for producing an artificial blast or current
       of air by pressure, as for increasing the draft of a
       furnace, ventilating a building or shaft, cleansing
       gram, etc.
3. A blowing out or excessive discharge of gas from a hole or
   fissure in a mine.
4. The whale; -- so called by seamen, from the circumstance
   of its spouting up a column of water.
5. (Zo["o]l.) A small fish of the Atlantic coast ({Tetrodon
   turgidus}); the puffer.
6. A braggart, or loud talker. [Slang] --Bartlett.