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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.

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RELATED WORDS

attraction, compulsion, fascination, fixation, hang-up, infatuation, obsession, passion, preoccupation, prepossession, monomania

Nearby words

  1. one-suiter,
  2. one-tailed,
  3. one-time,
  4. one-to-one,
  5. one-track,
  6. one-trick pony,
  7. one-two,
  8. one-up,
  9. one-upmanship,
  10. one-upsmanship
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.