annunciator
an·nun·cia·tor
noun
1.
an indicator that announces which electrical circuit has been active (as on a telephone switchboard)
Origin
From Latin [Term?].
Related words
Word family
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.