microphone
/ˈmaɪ.kɹəˌfoʊn/ noun B2- A device (transducer) used to convert sound waves into a varying electric current; normally fed into an amplifier and either recorded or transmitted over radio.
Plural microphones
From the library
The principal called the first group of students to the microphone.
Aditi felt a little sad as she walked away from the microphone.
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