/ məˈkænɪk; NAmE / noun
1.
a person whose job is repairing machines, especially the engines of vehicles :
a car mechanic
2.
mechanics [ U ] the science of movement and force
—see also quantum mechanics
3.
mechanics [ U ] the practical study of machinery :
the school's car maintenance department where students learn basic mechanics
4.
the mechanics [ pl. ] the way sth works or is done :
The exact mechanics of how payment will be made will be decided later.
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WORD ORIGIN
late Middle English (as an adjective in the sense relating to manual labour ): via Old French or Latin from Greek mēkhanikos , from mēkhanē , from mēkhos contrivance.