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clamshell

[klam-shel] /ˈklæmˌʃɛl/
noun
1.
the shell of a clam.
2.
Machinery.
  1. Also called clamshell bucket. a dredging bucket opening at the bottom, consisting of two similar pieces hinged together at the top.
  2. a machine equipped with such a bucket.
3.
Printing. a platen press.
Origin
1490-1500
1490-1500; earlier clam-shell; see clam1, shell
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for clam-shell

clamshell

/ˈklæmˌʃɛl/
noun
1.
(mainly US) a dredging bucket that is hinged like the shell of a clam
2.
(aeronautics)
  1. an aircraft cockpit canopy hinged at the front and rear
  2. the hinged door of a cargo aircraft
  3. another name for eyelid (sense 2)
3.
any of a variety of objects hinged like the shell of a clam, such as a container for takeaway food, a portable computer, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for clam-shell
n.

c.1500; see clam (n.) + shell (n.). As "hinged iron box or bucket used in dredging," from 1877.

Online Etymology Dictionary, © 2010 Douglas Harper
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8
11
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