First-class. (Compare A 2 and A 3, which are inferior grades.)
In good health.
In excellent or top condition.
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.
Used other than figuratively or idiomatically: see nimble, fingered.
Thieving, thievish.