1 : an ace dealt face down to a player (as in stud poker) and not exposed until the showdown
2 : an effective and decisive argument or resource held in reserve
1 : an ace dealt face down to a player (as in stud poker) and not exposed until the showdown
2 : an effective and decisive argument or resource held in reserve
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012