clam

1 of 3

noun (1)

ˈklam 

: clamp, clasp

clam

2 of 3

noun (2)

often attributive

1

a

: any of numerous edible marine bivalve mollusks living in sand or mud

b

: a freshwater mussel

2

: a stolid or closemouthed person

3

: clamshell

4

informal : dollar sense 3

Illustration of clam

• a incurrent orifice
• b siphon
• c excurrent orifice
• d mantle
• e shell
• f foot

clam

3 of 3

verb

clammed; clamming

intransitive verb

: to gather clams especially by digging

clammer

ˈkla-mər 

noun

Synonyms

Noun (2)

• dollar
• buck

Examples of clam in a Sentence

Noun (2)

it must take a whole lot of clams to buy a car like that

Recent Examples on the Web

Noun

The tiny shrimp-like crustaceans quickly returned to the clam, suggesting a strong relationship with the host species. —Lauren Liebhaber, Miami Herald, 2 Oct. 2025

Like previous-generation models, the charging case has a slide-open top, rather than open like a clam. —PC Magazine, 29 Sep. 2025

Verb

Located about 25 miles south of Fort Myers, this family-friendly, 33-square-mile barrier island is famous for its collection of shells—especially scallop, clam, and tulip varieties—and sand dollars, forming a veritable treasure trove for collectors. —Skye Sherman, Travel + Leisure, 15 Sep. 2025

Soup Costco food courts in Taiwan offer members clam chowder. —Alex Perry, Cincinnati Enquirer, 9 Sep. 2025

Word History

Etymology

Noun (1)

Middle English, from Old English clamm bond, fetter; akin to Old High German klamma constriction and perhaps to Latin glomus ball

Noun (2)

clam entry 1; from the clamping action of the shells

First Known Use

Noun (1)

before the 12th century, in the meaning defined above

Noun (2)

circa 1520, in the meaning defined at sense 1a

Verb

1636, in the meaning defined above

Phrases Containing clam

• (as) happy as a clam
• butter clam
• clam up
• clam worm
• giant clam
• hard clam
• hard-shell clam
• Manhattan clam chowder
• pismo clam
• razor clam
• round clam
• soft-shell clam
• surf clam

Rhymes for clam

• am
• bam
• cham
• damme
• damn
• dram
• flam
• fram
• gram
• ham
• jam
• jamb

Kids Definition

clam

1 of 2 noun

ˈklam 

1

: any of numerous edible marine mollusks that have two hinged shells and live in sand or mud

2

: a freshwater mussel

clam

2 of 2 verb

clammed; clamming

: to dig or gather clams