Key Card

No, not the key for the hotel that you lost yet again. The Key Card we - as poker players - talk about is the card needed to complete a good hand.

Kicker

If you and your opponent both have a Pair (or the like) of the same value, the highest card in each of your hands will decide this hand. For example: Player 1 has KJ994, Player 2 QT998 - Player 1 wins with King as the Kicker.

Knock

Knock is equal to Check[/]. It derives from live poker players where players will most of the time signal a Check by simply knocking on the table.