one-trick pony

British

noun

informal a person or thing considered as being limited to only one single talent, capability, quality, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

They played out from the back through Christian Norgaard and although they could mix it up, they were not a one-trick pony.

From BBC • Oct. 26, 2025

The vegetable, regarded as a fruit just as tomatoes are fruits commonly regarded as vegetables, isn’t a one-trick pony, either.

From Washington Times • Jun. 6, 2023

“Missing” is still a one-trick pony, but its disembodied narrative is probably here to stay.

From Washington Post • Jan. 18, 2023

It’s good that this film clocks in at 70 minutes, since there’s no getting around that this grisly meet-cute marriage of Brian De Palma pastiche and “The Human Centipede” is a one-trick pony.

From New York Times • Jan. 7, 2022

And I was pretty much a one-trick pony.

From "Simon vs. the Homo Sapiens Agenda" by Becky Albertalli

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023