clamshell

noun

clam·​shell ˈklam-ˌshel 

1

: the shell of a clam

2

a

: a bucket or grapple (as on a dredge) having two hinged jaws

b

: an excavating machine having a clamshell

c

: either of a pair of doors (as in an airplane tail) that open out and away from each other

d

: a hinged container, case, or cover that opens like the shell of a clam

Examples of clamshell in a Sentence

Recent Examples on the Web

This clamshell pack from Mystery Ranch has durable materials, solid stitching, and reinforced seams that help keep out dust from bumping around in a Land Cruiser. — Katie Jackson, Travel + Leisure, 17 Sep. 2026

Film buffs see this process as akin to an anointing; the trademark C, tucked into the upper-left corner of a plastic clamshell, signals a movie’s importance. — Sophia Nguyen, The Atlantic, 28 Aug. 2026

Summary Apple's iPhone Fold arrives as book-style foldables take 69% of shipments, clamshells collapse, and Samsung's Z Fold 8 breaks pre-order records. — Janhoi McGregor, Forbes.com, 23 Aug. 2026

Activities and entertainment Most passengers on Star Breeze are content to sit in the pool sipping cocktails, or snuggling in a clamshell lounger with a good book. — Condé Nast, Condé Nast Traveler, 12 Aug. 2026

Word History

First Known Use

circa 1520, in the meaning defined at sense 1

Rhymes for clamshell

• barbell
• bedwell
• befell
• bluebell
• bombshell
• bridewell
• capelle
• cartel
• carvel
• cogswell
• compel
• dispel

Kids Definition

clamshell

noun

clam·​shell ˈklam-ˌshel 

: the shell of a clam