master mechanic

a mechanic, especially one who is thoroughly skilled, in charge of other mechanics.

Origin of master mechanic

First recorded in 1830–40

The master-mechanic passed on, going out by the great door which opened for the locomotive entering-track.

The Taming of Red Butte Western |Francis Lynde
At last all eyes gravitated towards Neighbor, our master-mechanic.

The Nerve of Foley |Frank H. Spearman
"We'll be going in a few minutes," said the master-mechanic, taking his foot from the wheel-hub.

The Taming of Red Butte Western |Francis Lynde
"He's wit' himself, as a master-mechanic shu'd be," said Callahan.

The Grafters |Francis Lynde

Judson was looking the master-mechanic fairly in the eyes when he said, "No, I don't remember a thing about that."

The Taming of Red Butte Western |Francis Lynde