noun cut·tle·bone \ˈkə-təl-ˌbōn\

Definition of cuttlebone

  1. :  the shell of a cuttlefish that is sometimes used for polishing powder or for supplying cage birds with lime and salts

Origin and Etymology of cuttlebone

Middle English cotul cuttlefish (from Old English cudele) + English bone

First Known Use: 1547

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