Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
cm abbr = centimetre см (= сантиме́тр)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
CM abbr (US) (POST) (= North Mariana Islands)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.