i Register
In some senses, annunciator is marked as UK. Watch for register when choosing this word.
annunciator
noun 4
Definitions
noun
1
Anything that announces something.
2
Anything that announces something.
3
A signalling device that shows which of several electrical circuits is active, especially such a device in a telephone switchboard.
4
A buzzer in a signal box that sounds when a train activates a treadle positioned on the track, and thus provides a warning or announcement of a nearby train.
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