Blackjack Glossary

Short, plain-English definitions for every Blackjack term you will actually run into at the table or in the trainer.

Hit
Ask the dealer for another card.
Stand
Take no more cards.
Double (Double Down)
Double the bet, take exactly one card, then stand.
Split
Separate a pair into two hands, each with its own bet.
Surrender
Forfeit half the bet to end the hand on the worst situations.
Hard hand
A hand with no Ace, or an Ace that must count as 1.
Soft hand
A hand containing an Ace counted as 11.
Bust
A hand whose total exceeds 21.
Blackjack
An Ace plus a ten-value card on the initial deal. Pays 3:2.
Shoe
The 6–8 deck dealing device used in most Blackjack games.
Soft 17 (S17 / H17)
House rule for whether the dealer stands or hits on A,6.
DAS
Double-after-split allowed.
House edge
The casino's mathematical advantage, ~0.5% with perfect play.
Basic strategy
The mathematically optimal play for every hand vs every dealer up card.
Card counting
Tracking the high/low card ratio left in the shoe.
Running count
Hi-Lo: +1 for 2–6, 0 for 7–9, −1 for 10–A.
True count
Running count divided by decks remaining; drives bet sizing.
Insurance
Side bet vs dealer Ace; basic strategy says decline.
Push
A tie. Bet is returned.

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