Find the word definition

The Collaborative International Dictionary
ball fish

Bur fish \Bur" fish`\ (Zo["o]l.) A spinose, plectognath fish of the Allantic coast of the United States (esp. Chilo mycterus geometricus) having the power of distending its body with water or air, so as to resemble a chestnut bur; -- called also ball fish, balloon fish, and swellfish.