noun
a person or thing with only one special feature, talent, or area of expertise
-
The musician was worried about being labeled as a one-trick pony because of his repetitive style.
-
Don't be a one-trick pony, try to show off your other skills too!
-
He's just a one-trick pony, don't expect too much from him.
-
Being a one-trick pony in this industry won't get you far, you need to be versatile.