cut.tle.bone

n.（名詞）
The calcareous internal shell of a cuttlefish, used as a dietary supplement for cage birds or ground into powder for use as a polishing agent.
烏賊骨：烏賊的鈣質(zhì)內(nèi)殼，作為籠中鳥的飲食補充物或把它碾碎成粉用作上光劑

來源：
Middle English
中古英語
Middle English codel, cutil [cuttlefish] * see cuttlefish
中古英語 codel, cutil [烏賊] *參見 cuttlefish
bone
bone