cuttlefish: [11] The cuttlefish probably gets its name from its resemblance to a bag when its internal shell is removed. Its earliest recorded designation is cudele (the compound cuttlefish does not appear until the 16th century), which is generally taken to be a derivative of the same base as produced cod ‘pouch’ (as in codpiece and peascod). In the 16th century the variant scuttlefish arose, perhaps partly with reference to the creature’s swift movements. => cod
Old English cudele "the cuttlefish;" first element perhaps related to Middle Low German küdel "container, pocket;" Old Norse koddi "cushion, testicle;" and Old English codd (see cod).
