hobby horse
Preserved but no longer current.
Meaning · English
A man's favourite amusement, or study, is called his hobby horse. It also means a particular kind of small Irish horse: and also a wooden one, such as is given to children.
Era: ca. 1811 (Georgian)
Where it’s used:
Origin
British & Irish English
Sources & notes
Historical definition reproduced from Grose’s Dictionary of the Vulgar Tongue (1811 edition, public domain; Project Gutenberg #5402, retrieved 2026-07-31). Reflects the attitudes of its era.
Common questions
What does “hobby horse” mean?
A man's favourite amusement, or study, is called his hobby horse. It also means a particular kind of small Irish horse: and also a wooden one, such as is given to children.
Is “hobby horse” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.