Leg before wicket is one of the ways in which a batsman can be dismissed in the sport of cricket. What exactly is Leg Before Wicket? Follow our handy check-list to master one of cricket's more. Leg Before Wicket(LBW) Explained | Know Cricket Better Series. The definition of leg before wicket (lbw) is currently Law 36 in the Laws of Cricket, written by the Marylebone Cricket Club (MCC). In the sport of cricket, leg before wicket (LBW) is one of the ways in which a batsman can be dismissed. The leg before wicket (lbw) law is to cricket what the offside rule is to football - confusing.