[1] : The Collaborative International Dictionary of English v.0.48

balloonfish \balloon"fish`\, balloon fish \balloon" fish`\
   zool.
   a fish of the genus diodon such as diodon holocanthus
   or the genus tetraodon, having the power of distending its
   body by taking air or water into its dilatable esophagus. it
   is similar to but smaller than the porcupinefish. see
   globefish, and bur fish.
   1913 webster + wordnet 1.5
see also:
diodon diodon holocanthus tetraodon globefish bur fish 

[2] : WordNet (r) 2.0

balloonfish
     n : similar to but smaller than porcupinefish syn: diodon
         holocanthus
see also:
diodon holocanthus 

Balloonfish >> B Words
Balloonfish, definition of term: Balloonfish
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