from The American Heritage® Dictionary of the English Language, 4th Edition
- n. See gill arch.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of a series of bony looped structures which support the gills of fish
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. 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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