In boxing, a low blow is defined as an illegal strike that lands below a fighters waist. This can include punches, kicks, or any other strike that makes contact below the belt. The rules of boxing prohibit hitting an opponent in certain areas, and a low blow is one of them. A low blow can cause significant pain and discomfort, and can even result in a fighter being unable to continue the match. It is considered an unfair or illegal blow that can result in a warning, point deduction, or even disqualification depending on the severity of the infraction.