Meaning of LASER in English

LASER

(~s)

1.

A ~ is a narrow beam of concentrated light produced by a special machine. It is used for cutting very hard materials, and in many technical fields such as surgery and telecommunications.

...new ~ technology...

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2.

A ~ is a machine that produces a ~ beam.

...the first-ever ~, built in 1960.

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Collins COBUILD.      Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) .