Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An aquatic animal, such as a mollusk or crustacean, that has a shell or shell-like exoskeleton.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An aquatic invertebrate, such as a mollusc or crustacean, that has a shell.

from the GNU version of the Collaborative International Dictionary of English

  • n. Any aquatic animal whose external covering consists of a shell, either testaceous, as in oysters, clams, and other mollusks, or crustaceous, as in lobsters and crabs.

from The Century Dictionary and Cyclopedia

  • n. An aquatic animal, not a fish, having a shell, and especially one which comes under popular notice as used for food or for ornament.
  • n. A crustaceous animal, or crustacean, as a crab, lobster, shrimp, or prawn.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. meat of edible aquatic invertebrate with a shell (especially a mollusk or crustacean)
  • n. invertebrate having a soft unsegmented body usually enclosed in a shell

Etymologies

shell +‎ fish. (Wiktionary)

Examples

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Comments

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  • I'm allergic to shellfish. :<

    July 11, 2008

  • I wish more people were allergic to selfish than to shellfish.

    July 11, 2008

  • The word to use if you'd like to call someone selfish as cutely as possible.

    July 11, 2008