Meaning

• A bivalve mollusk of many kinds, especially those that are edible; for example the soft-shell clam (Mya arenaria), the hard clam (Mercenaria mercenaria), the sea clam or hen clam (Spisula solidissima), and other species. The name is said to have been given originally to the Tridacna gigas, a huge East Indian bivalve.

• Strong pincers or forceps.

• A kind of vise, usually of wood.

• A dollar (usually used in the plural).

  "Those sneakers cost me fifty clams!"

• A Scientologist.

• A vagina.

• One who clams up; a taciturn person, one who refuses to speak.

Meaning

• To dig for clams.