on a dime

Idioms & Phrases

on a dime

In a very small space, suddenly, as in That horse is so well trained it can turn on a dime. This expression alludes to the fact that the dime is the smallest-size U.S. coin. [Early 1900s]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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On a dime is always a great word to know.
So is flibbertigibbet. Does it mean:
a chattering or flighty, light-headed person.
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