Bal-lo͞on'-fish, n.
n. (Ichth.) A fish of the genus Diodon, having the power of inflating its body bladder-like, by swallowing air and making it pass into cavities beneath the skin. Cuvier.
n. (Ichth.) A fish of the genus Diodon, having the power of inflating its body bladder-like, by swallowing air and making it pass into cavities beneath the skin. Cuvier.