Source : Webster's Revised Unabridged Dictionary (1913)

Puffer \Puff"er\, n.
   1. One who puffs; one who praises with noisy or extravagant
      commendation.

   2. One who is employed by the owner or seller of goods sold
      at suction to bid up the price; a by-bidder. --Bouvier.

   3. (Zo["o]l.)
      (a) Any plectognath fish which inflates its body, as the
          species of {Tetrodon} and {Diodon}; -- called also
          {blower}, {puff-fish}, {swellfish}, and {globefish}.

Source : WordNet®

puffer
     n 1: delicacy that is highly dangerous because of a potent nerve
          poison in ovaries and liver [syn: {blowfish}, {sea squab}]
     2: any of numerous marine fishes whose elongated spiny body can
        inflate itself with water or air to form a globe; several
        species contain a potent nerve poison; closely related to
        spiny puffers [syn: {blowfish}, {globefish}]