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one-track mind

noun

a focus on one issue or topic, to the exclusion of all else; an obsession with one thing

Examples

She just has a one-track mind, wanting to move on.

Word Origin

1938; fr. railways

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Slang definitions & phrases for one-track mind

one-track mind

noun phrase

A mind limited to or obsessed with a single idea, theme, etc (1927+)


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Idioms and Phrases with one-track mind
A mind limited to only one line of thought or action, as in All you think about is sex—you have a one-track mind. This expression, alluding to a train that runs only on one track or in one direction, was first recorded in 1928.
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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