Part of speech: adjective

Of or pertaining to the Crustacea.

Part of speech: noun

One of the Crustacea, animals having crust- like shells, including lobsters, crabs, sow- bugs, etc.

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Usage examples "crustacean":

  1. A Crustacean is a fellow who wears his bones on the outside. - "Melbourne House", Elizabeth Wetherell.
  2. The first generation was a group of strange creatures, half fish and half Crustacean, which are known as the Ostracoderms. - "The Story of Evolution", Joseph McCabe.
  3. Some experts think, however, that the fish developed directly from a Crustacean, and hold that the Ostracoderms are the connecting link. - "The Story of Evolution", Joseph McCabe.