[klam] 
noun, verb, clammed, clam⋅ming.| 1. | any of various bivalve mollusks, esp. certain edible species. Compare quahog, soft-shell clam. |
| 2. | Informal. a secretive or silent person. |
| 3. | clamminess. |
| 4. | Slang. a dollar or the sum of a dollar: I only made 60 clams a week. |
| 5. | to gather or dig clams. |
| 6. | 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. |
