What is the meaning of Clamshell?

The shell of a clam.

Any object that, in (literal or figurative) resemblance to the shell of a clam, has a hinge on one edge and two surfaces that close together.

1. A dredging bucket with hinges like the shell of a clam.
2. In food service, the closing box (usually styrofoam but sometimes cardboard) given to consumers with takeout food.
3. A hinged case for a video tape, cassette tape, or video game cartridge.
5. A person's mouth.

   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 takeout food.

   A hinged case for a video tape, cassette tape, or video game cartridge.

   A person's mouth.

   Any object with some other resemblance to either one or both halves of the shell of a clam.

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

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

      To deform a die in a shape resembling the shell of a clam, as a result of uneven extrusion pressure.

      To dig out by means of a clamshell (dredging bucket).

      To compress or flatten underwater debris so as to avoid blocking a channel.

      To open or close by means of a hinge, similar to the way a clamshell opens and closes.

      Source: wiktionary.org