Artificial intelligent assistant

door-bell

ˈdoor-bell
  a. A bell in a house, connected with the door by a wire, and rung by means of a handle. b. A bell fixed on a door or door-case so as to be rung in opening the door; = door-alarm.

c 1815 Jane Austen Persuasion (1833) II. ii. 330 Lady Russell could not hear the door-bell. 1875 Talmage Around Tea-table ii. 8 The storm was so great that the door-bell went to sleep.

Oxford English Dictionary

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