Sulky

·adj A light two-wheeled carriage for a single person.

II. Sulky ·noun Moodly silent; sullen; sour; obstinate; morose; splenetic.

sulky
A one-horse chaise or carriage, capable of holding but one person: called by the French a DESOBLIGEA...

Dictionary of The Vulgar Tongue by Francis Grose
sulky
A carriage for a single person; generally in the form of a chaise. He bought him a sulky and a fast...

Dictionary of American Words And Phrases by John Russell Bartlett.