intercom

Noun
  1. A communication system linking different rooms within a building or ship etc (synset 103583224)
    is a type of: communication system - a system for communicating
    subtypes: interphone - a telephonic intercommunication system linking different rooms in a building or ship etc
    has: intercom speaker, squawk box, squawker - the loudspeaker on an intercom or public address system
    same as: intercommunication system

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