Meaning of “ray gun” in the English Dictionary

british dictionary

"ray gun" in British English

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ray gunnoun [ C ]

uk /ˈreɪ ˌɡʌn/ us /ˈreɪ ˌɡʌn/

in science fiction stories, a gun that produces rays that kill people or make them unable to move

(Definition of “ray gun” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)