ˈcamshell In Orkney and Shetland: Cuttle-fish bone. 1693Wallace Descr. Orkney 18 On the shore is to be found..Camshells or Os-Sepiæ, that the Gold-Smith makes so great Use of.1753Chambers Cycl. Supp.s.v.Camshall, a word used in Zetland to denote the os sepiæ.