clamshell

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.

An amphitheater, especially an outdoor amphitheater; the semi-circular acoustic backdrop behind and above the performers.

Similar to the operation of a clam's shell, having a hinge with two sides closing together

“It's a clamshell antenna.”