In excellent or top condition.
First-class. (Compare A 2 and A 3, which are inferior grades.)
In good health.
Under the International Union of Railways ("UIC") classification system, a steam locomotive that has two coupled driving wheels followed by two trailing wheels, with no leading wheels; also called an 0-2-2.
Especially good or preferred.
Cool; excellent.
One selection or preference; that which is chosen or decided; the outcome of a decision.
Anything that can be chosen.
The power to choose.
Do I have a choice of what color to paint it?
An option; a decision; an opportunity to choose or select something.
The best or most preferable part.