The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
noun pl. viperfish or vi·per·fish·es
Any of various small deep-sea fish of the family Chauliodontidae, having fanglike teeth, a long first ray of the dorsal fin, and photophores along the sides.