In blackjack, the action you are referring to is called "hitting". Hitting is when a player asks the dealer for another card in an attempt to improve their hand. The goal of hitting is to get as close to 21 as possible without going over, as going over 21 results in a "bust", which automatically loses the hand. The player can continue hitting until they feel that their hand is strong enough or until they go over 21. The decision to hit or stand is an important strategic decision in blackjack, as it affects the outcome of the game.
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