The dealer's face down card.
The leftmost (from the dealer's viewpoint) player-occupied position in a blackjack table. This player acts first.
Code that indicates the dealer stands on all hands totaling 17. This includes soft 17, e.g. A6. This rule favors the player.
An ace and a face card or 10, dealt as the first two cards to a player or the dealer. An unbeatable hand that pays 3 to 2 to the player (as long as the dealer doesn't also have a blackjack).
A player decision to take another card in blackjack. Also the card received.
The count of a hand in which any ace (if present) must be valued as a 1 to avoid busting. E.g. A86, K7. In a soft hand, an ace can be either 1 or 11.
Only the player knows what cards have been dealt to them.
Take no more cards from the dealer.