Answer: aceinthehole

AnswerCrossword Clue
ACEINTHEHOLESure thing
ACEINTHEHOLEHidden advantage
ACEINTHEHOLEResource in reserve
ACEINTHEHOLESecret advantage
ACEINTHEHOLEEffective resource held in reserve: Colloq.
ACEINTHEHOLEHidden asset.
ACEINTHEHOLEResource of a kind.
ACEINTHEHOLEKirk Douglas film: 1951
ACEINTHEHOLESecret weapon
ACEINTHEHOLEEcstatic golfer's shout?
ACEINTHEHOLEHidden resource