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Entry 1 sense Webster, 1913

ceras

· IPA
01 n. one of the often brightly colored and branching hornlike structures on the backs of nudibranchs and other related mollusks that serve as gills.
  1. 1.
    one of the often brightly colored and branching hornlike structures on the backs of nudibranchs and other related mollusks that serve as gills.