Main Entry: clam·shell

Pronunciation: \ˈklam-ˌshel\

Function: noun

Date: circa 1520

1 : the shell of a clam
2 a : a bucket or grapple (as on a dredge) having two hinged jaws b : an excavating machine having a clamshell c : either of a pair of doors (as in an airplane tail) that open out and away from each other d : a hinged container, case, or cover that opens like the shell of a clam