- any of various bivalve mollusks, especially certain edible species.
- a secretive or silent person.
- clamminess.
- a dollar or the sum of a dollar: I only made 60 clams a week.
- to gather or dig clams.
- 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.
- clamp (defs. 1-3).
- (formerly) pincers.
- any of various burrowing bivalve molluscs of the genera Mya, Venus, etc. Many species, such as the quahog and soft-shell clam, are edible and Tridacna gigas is the largest known bivalve, nearly 1.5 metres long
- the edible flesh of such a mollusc
- a reticent person
- to gather clams
- a variant of clem
