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1. The shell of a clam.
2. Any of various devices that consist of two parts attached by a hinge and that open and close like a clamshell, especially a digging or dredging machine with a bucket that has hinged jaws or a handheld electronic device.


1. (Mechanical Engineering) chiefly US a dredging bucket that is hinged like the shell of a clam
2. (Aeronautics) aeronautics
a. an aircraft cockpit canopy hinged at the front and rear
b. the hinged door of a cargo aircraft
c. another name for eyelid2
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



1. the shell of a clam.
a. Also called clam′shell buck`et. a dredging bucket opening at the bottom, consisting of two similar pieces hinged together at the top.
b. a machine equipped with such a bucket.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.clamshell - the shell of a clamclamshell - the shell of a clam      
shell - the hard largely calcareous covering of a mollusc or a brachiopod
2.clamshell - a dredging bucket with hinges like the shell of a clam
dredging bucket - a bucket for lifting material from a channel or riverbed
References in classic literature ?
Prim, right-angled paths neatly bordered with clamshells, intersected it like moist red ribbons and in the beds between old-fashioned flowers ran riot.
Beginning at the pile of clamshells, he lighted matches to trace my tracks in the sand.
At the end of a swift half-mile she rounded to, with head-sails trimming down and with a great flapping of main and mizzen, and dropped anchor in fifty feet of water so clear that every huge fluted clamshell was visible on the coral floor.
Throughout history, clamshells have been found in quarries along the East African coast.
For instance, in order to optimize operating procedures and carry out loading-discharge activities MRC bought two material handlers LIEBHERR with clamshells of 2.
Hand augers are a little more expensive than clamshells, from around $50 to $70--and again, price difference is driven by the style and quality of the auger head.
Weber Packaging Solutions has developed its new Alpha Compact top and bottom labeling system, which is suitable for top and/or bottom labeling on clamshells, trays and chipboard cartons.
The new Alpha Compact top and bottom labeling system is perfect for top and/or bottom labeling on clamshells, trays and chipboard cartons.
Kwik Products reportedly achieved the weld it needed and was able to return to full-scale production with a clamshell package that satisfied the new environmental regulations, shipping millions of clamshells annually.
The clamshells now contain 50% to 100% curbside-collected PET bottles and thermoforms.
Available for sale online or with a personal sales representative, Sunrise Packaging launches the program in March with seven different clamshells of varying square, round, and rectangular shapes ranging from 1” to 6” in length, width, and depth.
This robotic Packaging Automation Cell, which gently packs clamshells into cases at high speeds, is designed to reduce the total cost of ownership by delivering a standardized, fully-integrated solution that can be dropped into any line.