from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun zoology Any of a series of
bony loopedstructures which support the gillsof fish
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun one of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians
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