Meaning of CAM in English

CAM

cam /kæm/ BrE AmE noun [countable]

[ Date: 1700-1800 ; Origin: Perhaps from French came , from German kamm 'comb' ]

a wheel or part of a wheel that is shaped to change circular movement into backwards and forwards movement

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.