A light-ray weapon is a type of weapon that uses light rays, such as lasers, to cause damage. The term 'light-ray weapon' can be abbreviated to 'LASER, ' which is a five-letter word. Lasers are used in many different types of weapons, from military-grade weapons to consumer products. Lasers can be used to target and destroy targets with pinpoint accuracy, or to temporarily blind or disorient an enemy.