ˈ ̷ ̷ˌ ̷ ̷ noun
Etymology: clam (V) + shell
1. : the shell of a clam
2. : an object or especially a piece of equipment or apparatus resembling or having a part that resembles a clam or the valves of a clam (as in mechanical operation): as
a. : a bucket or grapple (as on a crane, dredge, or shovel) having two hinged jaws — called also grab bucket
b. : either of a pair of doors in the nose or tail of an airplane that open outward and away from each other when loading or unloading
clamshell cargo doors