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Related to gill arch: Gill raker
1. One of several bony or cartilaginous arches located on either side of the pharynx and supporting the gills in fish and amphibians.
2. Embryology One of several corresponding arches in the embryo of a bird, reptile, or mammal that develop into structures of the ear and neck. In both senses also called branchial arch, pharyngeal arch.
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|Noun||1.||gill arch - one of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians|