clamshell
noun
Definitions
The shell of a clam.
A dredging bucket with hinges like the shell of a clam.
In food service, the closing box (usually styrofoam but sometimes cardboard) given to consumers with take-out food.
Any object that has a hinge on one edge and two surfaces that close together.
adjective
Definitions
Similar to the operation of a clam's shell, having a hinge with two sides closing together
Example: It's a clamshell antenna.