\Sulk"y\, a. [Compar. {Sulkier}; superl. {Sulkiest}.] [See
{Sulkiness}, and cf. {Sulky}, n.]
Moodly silent; sullen; sour; obstinate; morose; splenetic.
Syn: See {Sullen}.

\Sulk"y\, n.; pl. {Sulkies}. [From {Sulky}, a.; -- so
called from the owner's desire of riding alone.]
A light two-wheeled carriage for a single person.
Note: Sulky is used adjectively in the names of several
      agricultural machines drawn by horses to denote that
      the machine is provided with wheels and a seat for the
      driver; as, sulky plow; sulky harrow; sulky rake, etc.