one-trick pony
one-trick pony · one-trick ponies
A performing animal that knows only one trickA performing animal (especially a pony) that knows only one trick.
Meaning
2 sensesA performing animal (especially a pony) that knows only one trick.
(broadly, idiomatic)A person or group noteworthy for only a single achievement, skill, or characteristic.
Translations
2 languagesForms
plural: one-trick poniesWord family
3 related wordsDerivedone-trick-ponyism