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Definition of Entryphone
1. Noun. An intercom system fitted at the entrance to a building, especially a block of flats, by which visitors can identify themselves to specific occupants before being admitted to the building. ¹
2. Noun. a An intercom system which enables someone, without opening the door, to converse with the person who has rung the doorbell. ¹
¹ Source: wiktionary.com