pony
noun
[ ˈpəʊni ]
• a horse of a small breed, especially one below 15 hands (or 14 hands 2 inches).
• a small glass or measure of alcohol.
• "a pony of vodka"
• a sum of £25.
pony
verb
• pay a sum of money, especially as a contribution or unavoidable expense.
• "he ponied up $450 for the project"
Origin:
mid 17th century: probably from French poulenet ‘small foal’, diminutive of poulain, from late Latin pullanus, from Latin pullus ‘young animal’.