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1 definition by Mobuku DeKlonku

CM is abbreviation of the term "Certain Man". CM is a description of a rock bottom rated member of society due to their dull and foolish antics.
An example of a CM type of person would be someone who plays microstars like they are real players or collects sports games with the intention of not playing them.
by Mobuku DeKlonku September 15, 2013