The accidental movement or failure of a cross brace.
In the sport of Australian rules football, a kick-in (sometimes known as a kick-out, and known for much of the game's history as a kick-off) is the common name for the procedure to restart the game after a behind. It involves a defender from the team who did not score kicking the ball back into play from the defensive goal square.

English
Etymology
Deverbal from kick out.
Noun
kickout (plural kickouts)
- (surfing) A rapid turn performed by shifting one's weight to the rear of the surfboard.
- (basketball) A pass to another offensive player who immediately shoots for the basket.
- (soccer) A kick made by the goalkeeper from the goal area.
- (rugby, American football) A drop kick by a player on the side to return the ball back into play.
- (water polo) A penalty for holding or sinking the driver