plectognath n 1: tropical marine fishes having the teeth fused into a beak and thick skin covered with bony plates or spines [syn: {plectognath}, {plectognath fish}]
Plectognath \Plec"tog*nath\, a. (Zool.) Of or pertaining to the Plectognathi. -- n. One of the Plectognathi. [1913 Webster]