speakerphone

noun
🔊/ˈspiːkəfəʊn/
🔊/ˈspiːkərfəʊn/
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  1. a phone that can be used without being held, because it contains a microphone and a loudspeaker扬声电话(内置麦克风和扬声器,使用时无须拿起听筒)Topics Phones, email and the internetc2