Definition of "one-track" []

• Obsessively limited to a single idea or purpose: a one-track mind. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Actually, you could say I still have a bit of a one-track mind."
• "When I first sat in front of my computer screen to write a simple little ghost story, I had a one-track mind."
• "And, damn, why was I suddenly plagued with the one-track mind of a horny adolescent boy?"