Poker glossary
Every term this trainer uses, defined in plain language. These same definitions appear as tooltips wherever a term shows up in the app. Link to any entry with its anchor, like /glossary#three-bet.
- 3-bet
- the first re-raise. Counting the big blind as the first bet and the open raise as the second, re-raising the open is the third bet.
- 4-bet
- re-raising a 3-bet. Ranges get very strong by this point.
- 5-bet
- re-raising a 4-bet. At 100 BB stacks this is effectively always an all-in shove.
- All-in
- betting your entire stack. Nothing left to decide once it’s called.
- An open (open-raise)
- making the first raise into a pot nobody has entered yet, after everyone before you folded.
- Big Blind (BB)
- posts a full big blind before the deal. It acts last preflop and already has one bet invested, so it gets a discount and defends many hands.
- Big blinds
- the standard measuring unit for bets and stacks. “2.3 BB” means 2.3 times the big blind; stacks here are 100 BB deep.
- Board texture
- the character of the shared cards: paired, all one suit, tightly connected, big-card heavy, or small and raggedy. Texture decides how strong any hand really is, and who a flop favors.
- Call
- match the current bet and continue in the hand without raising.
- Combo
- one exact two-card holding. “AKs” covers 4 combos (one per suit), “AKo” covers 12, and a pocket pair covers 6. There are 1,326 starting combos in total.
- Cutoff (CO)
- the seat directly right of the Button; the second-best position at the table.
- Equity
- your chance of winning the pot if the remaining cards were dealt right now, with no more betting. 25% equity wins about 1 hand in 4. Computed here against every hand the opponent can still hold.
- Fold
- give up the hand, forfeiting any chips already invested.
- Game Theory Optimal
- strategy computed by solving the game so that no opponent adjustment can exploit it. “Simplified” means every hand is played one single way (no mixing percentages), which makes the charts learnable.
- Hijack (HJ)
- the second seat to act preflop, two seats right of the Button.
- Jam
- slang for going all-in.
- Lojack (LJ)
- the first seat to act before the flop at a 6-max table. Acting earliest with five players behind means it plays the tightest range.
- Offsuit
- the small “o” (lower-left half of the grid): the two cards have different suits, 12 combos.
- Pocket pair
- the grid diagonal: both hole cards share a rank (AA, 77…), 6 combos each.
- Raise
- increase the current bet. Unopened pots here are raised to about 2.3 big blinds; re-raises scale with the pot.
- Range
- every hand an opponent could still hold, given how they have played so far. Decisions are graded against that whole set rather than one guessed hand.
- Small Blind (SB)
- posts half a big blind before cards are dealt and acts first after the flop, the worst position. It mostly raises-or-folds rather than calling.
- Suited
- the small “s” (upper-right half of the grid): both cards share one suit, 4 combos. The flush potential makes these clearly stronger than the same ranks offsuit.