The act of increasing the smoothness factor of a currently smoothless surface by a coefficient of 1 or greater
It is considered improper to pronounce the word without making a waving hand motion underneath your chin.
Should the term arise in daily conversation, without a hand motion being made, the term will be repeated with the inclusion of the hand gesture.
I was smoothing my intake manifold when I..
smoothing *hand motion
... ran across a dirty runner
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