la‧ser /ˈleɪzə $ -ər/ noun [countable]
[Date: 1900-2000; Origin: From "light amplification by stimulated emission of radiation"]

1. a 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 surgery

2. a beam of light produced by a laser

[TahlilGaran] Dictionary of Contemporary English ▲

laser
noun
ADJ. powerful
VERB + LASER use
LASER + NOUN beam, light | printer | gun | surgery, therapy, treatment

[TahlilGaran] Collocations Dictionary ▲

LASER
Light Amplification By Stimulated Emission of Radiation 
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[TahlilGaran] Acronyms and Abbreviations Dictionary ▲