'ceras' definitions:

Definition of 'ceras'

From: WordNet
noun
One of the often brightly colored and branching hornlike structures on the back of the nudibranch (and other related mollusks) that serve as gills

Definition of 'ceras'

From: GCIDE
  • ceras \ceras\ n. one of the often brightly colored and branching hornlike structures on the backs of nudibranchs and other related mollusks that serve as gills. [WordNet 1.5]