<p><strong>Noun</strong></p><ul><li>the shell of a clam</li><li>an object that has two hinged parts and that opens and closes like a clamshell, such as a laptop computer or a box with a cover joined on one side</li><li>a clamshell bucket (Machinery)</li><li>a dredging bucket opening at the bottom, consisting of two similar pieces hinged together at the top</li><li>a machine equipped with such a bucket</li><li>a platen press (Printing)</li></ul><p><strong>Adjective</strong></p><ul><li>of or noting an object that opens and closes like a clamshell</li><li>clamshell packaging</li><li>a clamshell phone</li><li>clamshell packaging</li></ul>