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English definition of “caller”

caller

noun [C] (PHONE)    /ˈkɔː.lər/ US  /ˈkɑː.lɚ/
someone who makes a phone call, especially a member of the public who calls a radio or television programme while it is being broadcast: I'd just like to comment on what your previous caller was saying.Speakers and talkers
(Definition of caller noun (PHONE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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