also crackajack noun Etymology: probably alteration of 3crack + jack (man) Date: 1895 a person or thing of marked excellence, ~ adjective
CRACKERJACK
Meaning of CRACKERJACK in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012