mechanic

A manual worker; a labourer or artisan.

Someone who builds or repairs machinery, a technician; now specifically, someone who works with and repairs the mechanical parts of a motor vehicle, aircraft or similar.

A device, command, or feature which allows someone to achieve a specific task.

“This game has a mechanic where if you run toward a ledge you automatically jump off rather than just falling.”

A hit man.

Mechanical; relating to the laws of motion in the art of constructing things

Of or relating to a mechanic or artificer, or to the class of artisans; hence, rude; common; vulgar; base.