Pony

·noun A small horse.

II. Pony ·noun A small glass of beer.

III. Pony ·noun Twenty-five pounds sterling.

IV. Pony ·noun A translation or a key used to avoid study in getting lessons; a crib.

Shetland pony
·- One of a small, hardy breed of horses, with long mane and tail, which originated in the Shetland ...

Webster's Dictionary of the English Language
to pony up
A vulgar phrase, meaning to pay over money. Ex. 'Come, Mr. B----, pony up that account;' that is, pa...

Dictionary of American Words And Phrases by John Russell Bartlett.