Crack"a*jack (?), n. [prob. from crack + jack, a man.]
1.
An individual of marked ability or excellence, esp. in some sport; as, he is a crackajack at tennis.
[Slang]
2.
A preparation of popped corn, candied and
pressed into small cakes.
[U. S.]
© Webster 1913.
Crack"a*jack`, a.
Of marked ability
or excellence. [Slang]
© Webster 1913.