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one-track mind

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one-track mind

Fig. a mind that thinks entirely or almost entirely about one subject. Adolescent boys often have one-track minds. All they're interested in is the opposite sex. Bob has a one-track mind. He can only talk about football.

See also: mind

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.

See also: mind

one-track mind

n. a (person’s) mind obsessed with only one thing. When it comes to food, Tom has a one-track mind.

See also: mind