Noun

1. A bottle of liquor, half the usual size of 750 millilitres; such bottles are generally shaped to fit in one's pocket.
   • While you're at the liquor store, can you pick up another mickey of rye?
2. A Mickey Finn; a beverage, usually alcoholic, that has been drugged.
3. American depression era term for a potato as in a "roasted mickey".
   • We roasted mickeys over a fire with two foot sticks.
4. piss, shortened and more commonly used form of Mickey Bliss.