any of various bivalve mollusks, esp. certain edible species. Compare quahog , soft-shell clam .

Informal . a secretive or silent person.

clamminess.

Slang . a dollar or the sum of a dollar

I only made 60 clams a week.

to gather or dig clams. ?

clam up, Slang . to refuse to talk or reply; refrain from talking or divulging information

The teacher asked who had thrown the eraser, but the class clammed up.

noun

cherrystone , littleneck , mollusk , quahog , base , bivalve , clamp , clasp , crash , dollar , grasp , hush , mussel , shellfish