mechanic
noun
uk/mɪˈkænɪk/ us [ C ]
someone whose job is repairing vehicles and other machines:
A team of engineers and mechanics help manufacture the machines used on assembly lines.
a car/motor/aircraft mechanic
mechanics
[ U ]
the study of the effect of physical forces on objects and their movement:
He is a professor of engineering, science and mechanics.
[ plural ]
the way something works or happens:
I'm not interested in the mechanics of the advertising campaign.