pony

pony is a Noun

Definition:

[1] A small horse.

[2] Twenty-five pounds sterling. [Slang, Eng.]

[3] A translation or a key used to avoid study in getting lessons; a crib. [College Cant]

[4] A small glass of beer. [Slang] Pony chaise, a light, low chaise, drawn by a pony or a pair of ponies. -- Pony engine, a small locomotive for switching cars from one track to another. [U.S.] -- Pony truck (Locomotive Engine), a truck which has only two wheels. -- Pony truss (Bridge Building), a truss which has so little height that overhead bracing can not be used.