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: Webster's Revised Unabridged Dictionary (1913)
 

Diodon \Di"o*don\, n. [Gr. di- = di`s- twice + ?, ?, a tooth: cf. F. diodon.]

1. (Zo["o]l.) A genus of spinose, plectognath fishes, having the teeth of each jaw united into a single beaklike plate. They are able to inflate the body by taking in air or water, and, hence, are called globefishes, swellfishes, etc. Called also porcupine fishes, and sea hedgehogs.

2. (Zo["o]l.) A genus of whales.

Source: Webster's Revised Unabridged Dictionary (1913)