D defs.my
Entry 1 sense Webster, 1913

Branchial

· Bran·chi·al · IPA /ˈbɹæŋ.ki.əl/
01 a. Of or pertaining to branchiæ or gills.
  1. 1.
    Of or pertaining to branchiæ or gills.(Anat.)
Phrases & compounds
Branchial arches — the bony or cartilaginous arches which support the gills on each side of the throat of fishes and amphibians. See Illustration in Appendix.
Branchial clefts — the openings between the branchial arches through which water passes.