411 REFERENCE · Wiktionary
Entryphone
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
entryphone
English
Etymology
Entry + phone. A trademark, held by The Entryphone Company Limited.
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.