one that crops or feeds on heath; a sheep or pony, living on open heath or down; hence, a person who inhabits a heath.

A pony which is entered in, or is of a standard suitable to be entered in, a competitive show.

(a) a pony of inferior breed or small size; (b) = piney-woods cracker n..

More fully shaganappi pony. A small or rough pony, used esp. by North American Indians. Now historical and rare.

U.S. colloquial. An untrained pony. Obsolete.