From WordNet (r) 3.0 (2006) [wn]:
puffer
n 1: delicacy that is highly dangerous because of a potent nerve
poison in ovaries and liver [syn: blowfish, sea squab,
puffer, pufferfish]
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: puffer, pufferfish, blowfish,
globefish]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Puffer \Puff"er\, n.
1. One who puffs; one who praises with noisy or extravagant
commendation.
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2. One who is employed by the owner or seller of goods sold
at suction to bid up the price; a by-bidder. --Bouvier.
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3. (Zool.)
(a) Any plectognath fish which inflates its body, as the
species of Tetrodon and Diodon of the family
Tetraodontidae; -- called also blower,
puff-fish, swellfish, and globefish. They are
highly poisonous due to the presence of glands
containing a potent toxin, tetrodotoxin.
Nevertheless they are eaten as a delicacy in Japan,
being prepared by specially licensed chefs who remove
the poison glands.
(b) The common, or harbor, porpoise.
[1913 Webster]
4. (Dyeing) A kier.
[1913 Webster]