The one-track branch line meant that any delay could cascade, forcing opposing trains to wait at the passing loops.

One froze in one's tracks when the thunder cracked overhead.

His one track mind made it hard for him to focus on anything but the project.

The committee, composed largely of one track minds, dismissed any alternative proposals without discussion.

Even when friends tried to talk about other topics, her one-track mind kept drifting back to the upcoming audition.

The director was tired of dealing with employees who had one-track minds and never considered alternative solutions.

In the meeting, he advised, 'Always cover one's tracks,' and left the team wondering what exactly he meant.