Definition of speakerphone noun from the Oxford Advanced Learner's Dictionary

 

speakerphone

 noun
noun
BrE BrE//ˈspiːkəfəʊn//
 
; NAmE NAmE//ˈspiːkərfoʊn//
 
Communication devices
 
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a telephone that can be used without being held, because it contains a microphone and a loudspeaker See related entries: Communication devices
See the Oxford Advanced American Dictionary entry: speakerphone