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Acronyms that contain the term clam up 

What does clam up mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: clam up.

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CM

Clam Man

Miscellaneous » Names and Nicknames

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OHC

Ocean Hued Clam

Miscellaneous » Unclassified

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OCMB

Offshore Clam Management Board

Academic & Science » Ocean Science

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54517

Clam Lake, WI

Regional » ZIP Codes

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99568

Clam Gulch, AK

Regional » ZIP Codes

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NECC

New England Clam Chowder

Miscellaneous » Unclassified

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RBC

Red - Blood Clam

Medical

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What does clam up mean?

close up, clam up, dummy up, shut up, belt up, button up, be quiet, keep mum(verb)
refuse to talk or stop talking; fall silent

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