American English

Definition of loudspeaker noun from the Oxford Advanced American Dictionary



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  1. 1a piece of equipment that changes electrical signals into sound, used in public places for announcing things, playing music, etc. Their names were called over the loudspeaker. see also public address system
  2. 2(old-fashioned) the part of a radio or piece of musical equipment that the sound comes out of synonym speaker
See the Oxford Advanced Learner's Dictionary entry: loudspeaker