pony

1. A small horse; specifically, any of several small breeds of horse under 14.2 hands at the withers.
2. A small serving of an alcoholic beverage, especially beer.

   1879, “Some Queer Interviews: Interview with a Pony of Beer”, Puck, Vol. 5–6, p. 435

3. (New South Wales, Victoria) A serving of 140 millilitres of beer (formerly 5 fl oz); a quarter pint.
4. Twenty-five pounds sterling.
5. A translation used as a study aid; loosely, a crib, a cheat-sheet.
6. A ponytail hairstyle.

1. To lead (a horse) from another horse.
2. To use a crib or cheat-sheet in translating.

noun

Crap; rubbish, nonsense.

adjective

Of little worth.