1.
Not in the proper order or sequence, as in When her doubles partner began to serve out of turn, their opponents called the umpire. [Late 1800s]
2.
In an inappropriate manner or at an inappropriate time, as in I may be out of turn telling you, but shorts are not permitted in the restaurant. [First half of 1900s] Also see
speak out of turn.
When a player bets, raises, checks or folds before the action comes to them, or when it is someone else's play.
SoundPoker Says: When a player makes their decision out of turn, it can influence the decision of many other players. For example, if the action is three people to your right, if you were on the button and folded, either one of the two players between you (the button) and the action may raise in order get last position. One of the benefits of on-line poker is that the games are set up so players cannot go out of turn.
See Also: Position