Noun. 1. Ј25 sterling. 2. Rubbish, nonsense. E.g."Our team are a load of old pony and don't deserve to be in the final." 3. An act of defecation. E.g."Can you wait for me? I need to have a pony." * Versions 2 and 3 are from the rhyming slang pony and trap meaning 'crap'. See 'crap'.