Wiktionary
n. Something that operates capably through the effective coordination of many parts.
Usage examples of "well-oiled machine".
This operation, it's like a well-oiled machine, running day and night, bringing us closer to the moment when elements within the U.
They neglect the aerobic stuff, but you move like some kind of well-oiled machine.
Once he got over stooping through the door, he moved like a well-oiled machine, muscles rippling under his pale skin.
With a wry smile, she thought of enemy accounts she had read that depicted the Domination as a smooth well-oiled machine moving in perfect coordination.
He also had the kind of personality that couid take a crew of wild men and make them work like a well-oiled machine across a thousand miles of Venus jungle.
On the parade ground at Whale Island hundreds of superbly disciplined blue-jackets had suffered themselves to be manoeuvred with the ease of a well-oiled machine at the sound of that far-reaching imperious voice.
Instead, reacting like a well-oiled machine, each outpost went to Yellow.