a device that gives a visual indication as to which of a number of electric circuits has operated, such as an indicator in a hotel showing in which room a bell has been rung
2.
a device giving an audible signal indicating the position of a train
3. a less common word for announcer
annunciator in American English
(əˈnʌnsiˌeɪtər)
noun
1.
a person or thing that announces
2.
an electric indicator, as a light or buzzer, used in hotels, offices, etc. to show the source of calls
Word origin
LL(Ec) annuntiator
Examples of 'annunciator' in a sentence
annunciator
`Ms. Martine calling on Line One," the annunciator said instantly.