From Longman Dictionary of Contemporary Englishlaserla‧ser /ˈleɪzə $ -ər/ ●●○ noun [countable] 1 Ta piece of equipment that produces a powerful narrow beam of light that can be used in medical operations, to cut metals, or to make patterns of light for entertainment laser surgery2 a beam of light produced by a laserOrigin laser (1900-2000) From "light amplification by stimulated emission of radiation"
