- any of several flattened marine fishes of the family Monacanthidae, having an elongated head with a small mouth and small, spiny scales.
- a triggerfish.
Origin of filefish
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- any tropical triggerfish, such as Alutera scripta, having a narrow compressed body and a very long dorsal spine
C18: referring to its file-like scales