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.
Of excellent quality, superfine.
better than average, better than usual; wonderful.
Very; extremely (used like the prefix super-).