one-track

American  

[wuhn-trak] / ˈwʌnˌtræk /

adjective

1. having only one track.

2. unable or unwilling to cope with more than one idea, action, etc., at a time; narrow.

   a one-track mind.

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one-track British  

adjective

1. informal obsessed with one idea, subject, etc

2. having or consisting of a single track

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Etymology

Origin of one-track

First recorded in 1925–30

Example Sentences

The US has already started to change its stance on Somaliland, moving away from its Mogadishu-focused approach, known as the "one-track" Somalia policy.

From BBC

“Zana definitely helps me be a little less one-track mind and enjoy what just happened,” he says.

From Los Angeles Times

The on-again-off-again relationship opens up Miranda's one-track mind.

From Salon

“You have a one-track mind, you know that?”

From Literature

“Such a one-track mind. That’s the way we’re going about things. Literally, whatever day we’re in, looking to get the most out of it, dominate the day, then we’re going to sleep tonight and wake up tomorrow and see if we can’t dominate that day,” he said.

From Seattle Times