pony

(noun) a range horse of the western United States.

(noun) an informal term for a racehorse. Example: "He liked to bet on the ponies."

(noun) a literal translation used in studying a foreign language (often used illicitly). Synonyms: trot, crib.

(noun) a small glass adequate to hold a single swallow of whiskey. Synonyms: shot glass, jigger.

(noun) any of various breeds of small gentle horses usually less than five feet high at the shoulder.