The American Heritage® Dictionary of the English Language, 4th Edition
n. A widely distributed marine fish (Regalecus glesne) having a slender silvery body up to 11 meters (36 feet) in length, a bright red dorsal fin along its entire length, and an undulating motion in swimming resembling that of a snake.
n. A large, greatly elongated, type of fish of the family Regalecidae.
the GNU version of the Collaborative International Dictionary of English
n. The ribbon fish.
The Century Dictionary and Cyclopedia
n. A trachypteroid or tæniosomous fish, Regalecus glesne, of the family Regalecidæ, a kind of ribbon-fish. It attains a length of from 12 to more than 20 feet.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. thin deep-water tropical fish 20 to 30 feet long having a red dorsal fin
Word Usage
"MALIBU KTLA -- A 12-foot long oarfish washed ashore in Malibu this week and researchers at the Los Angeles County Natural History Museum say they're looking forward to studying it."