trunkfish

from The Century Dictionary.

• noun Any ostraciont.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) Any one of several species of plectognath fishes, belonging to the genus Ostracion, or the family Ostraciontidæ, having an angular body covered with a rigid integument consisting of bony scales. Some of the species are called also coffer fish, and boxfish.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun boxfish

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun any of numerous small tropical fishes having body and head encased in bony plates