from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various bright-colored tropical marine fishes of the family Acanthuridae, having one or more sharp erectile spines near the base of the tail.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of many brightly coloured fishes, of the family Acanthuridae, that have an erect spine near the tail
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. brightly colored coral-reef fish with knifelike spines at the tail
From its lancetlike spines, which resemble surgeons' instruments.(American Heritage® Dictionary of the English Language, Fourth Edition)
surgeon + fish (Wiktionary)