This refers to a poker game in a casino, as opposed to online. To have the software automatically post your blind so it doesn't have to ask you each time. To have the software automatically fold your hand at the showdown if it isn't a winner. A forced bet put in by all the players before the start of the hand.
An unethical, but legal, way of getting an edge in a game. The software is 'protecting' your hand form being folded instead. When you cannot act in time you are put all-in for the hand. Wagering all your chips/money on at once. ('I was ahead on the turn before he hit the flush on the river'). To be winning a hand at a specific point in time. This technique is usually used by making a bluff with the intention of being viewed as a loose player.
To make a deliberate play which is seen by other players for the purpose of creating a certain image as a player. This is different from a re-buy because it can only be done at a specific time and it also signifies the end of the rebuy period. A final opportunity to add more chips in a re-buy tournament. A hand with an Ace but no flush, straight or pairs. In Hold Em or Stud, the fifth card dealt to a player (in Hold Em this would be the river card). In Hold Em or Stud, the fourth card dealt to a player (in Hold Em this would be the turn card). To reraise after a player has already raised to 2 bets.