- the calcareous internal shell of cuttlefishes, used to make powder for polishing and fed to canaries and other pet birds to supply their diet with lime.
Origin of cuttlebone
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Examples from the Web for cuttlebone
- the internal calcareous shell of the cuttlefish, used as a mineral supplement to the diet of cage-birds and as a polishing agent
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012