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annunciator

(UK, railways) 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.

əˈnʌnsəteɪtɚ43 viewsLast reviewed Jun 29, 2026+ Add a definition
Tech, Dev & AI
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UK
#1·Apr 27, 2026UK

(UK, railways) 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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UK
#2·Apr 27, 2026UK

A signalling device that shows which of several electrical circuits is active, especially such a device in a telephone switchboard.

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UK
#3·Apr 27, 2026UK

Anything that announces something.

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