cuttlefish bone UK /ˌkʌtl̩fɪʃ ˈbəʊn/US /ˌkʌt(ə)lˌfɪʃ ˈboʊn/ noun1 •The calcareous, oval-shaped internal shell of a cuttlefish (order Sepiida), originally used in powdered form as an antacid and for absorbing moisture or polishing objects, and now chiefly as a dietary supplement for cage birds. formscuttlefish bones
