Run out is a method of dismissal

Dismissal (cricket)

In the sport of cricket, a dismissal occurs when the batsman is out . Colloquially, the fielding team is also said to have snared, bagged or captured a wicket. At this point a batsman must discontinue batting and leave the field permanently for the innings...

 in the sport

Sport

A Sport is all forms of physical activity which, through casual or organised participation, aim to use, maintain or improve physical fitness and provide entertainment to participants. Sport may be competitive, where a winner or winners can be identified by objective means, and may require a degree...

 of cricket

Cricket

Cricket is a bat-and-ball game played between two teams of 11 players on an oval-shaped field, at the centre of which is a rectangular 22-yard long pitch. One team bats, trying to score as many runs as possible while the other team bowls and fields, trying to dismiss the batsmen and thus limit the...

. It is governed by Law 38 of the Laws of cricket

Laws of cricket

The laws of cricket are a set of rules established by the Marylebone Cricket Club which describe the laws of cricket worldwide, to ensure uniformity and fairness. There are currently 42 laws, which outline all aspects of how the game is played from how a team wins a game, how a batsman is...

.

A batsman is out Run out if at any time while the ball is in play no part of his bat or person is grounded behind the popping crease

Crease (cricket)

In the sport of cricket, the crease is a certain area demarcated by white lines painted or chalked on the field of play.The term crease also refers to any of the lines themselves, particularly the popping crease. Law 9 of the Laws of Cricket governs the size and position of the crease markings...

 and his wicket is fairly put down by the opposing side.

A batsman may be dismissed Run out whether or not a run is being attempted, even if the delivery is a no ball

No ball

In the sport of cricket a no ball is a penalty against the fielding team, usually as a result of an illegal delivery by the bowler. The delivery of a no ball results in one run to be added to the batting team's score, and an additional ball must be bowled...

 (i.e.