noun
: a device that amplifies the sound reaching an auditor's receptor organs ; specifically : an instrument for this purpose that consists of microphone, amplifier, and reproducer and is fundamentally comparable to a miniature telephone
noun
: a device that amplifies the sound reaching an auditor's receptor organs ; specifically : an instrument for this purpose that consists of microphone, amplifier, and reproducer and is fundamentally comparable to a miniature telephone
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012