Double Down
Depending on the cards he's dealt, a player may choose to 'double down'. In other words, the player is allowed to double his original bet. In such a case he must draw one additional card to his hand and cannot draw any additional cards upon receiving that card. To double down the player must turn his hand face up and place the cards in front of his bet. He then adds an equal amount to his original bet and places these chips next to that bet so that now there are two equal bets side by side. The dealer then deals one additional card to the player face down, usually slipping that card under the player's bet. The player may look at that card if he chooses.
For more in depth information on rules and strategies of black jack:
Click Here
