Longman Dictionary of Contemporary English
public-address system
noun
EXAMPLES FROM CORPUS
▪ In an even more pointed joke, Werner Heisenberg was repeatedly paged over the public-address system for two days running.
▪ Or persuade the operators of a slow train to Ulan Bator to put his Beatles cassette on the public-address system?
▪ Stern warnings broadcast over the student public-address system in the evening of 8 October exacerbated the situation.
Usage examples of "public-address system".
Staggering to his feet, Tom made his way over to the wall panel of the public-address system.
There came a long halt at Washington, where Bond heard through his dreams the measured clang of the warning bells on the shunting engines and the soft think-speak of the public-address system on the station.
It was about the size of a steamer trunk-the height and depth of a steamer trunk, but not as long-and they separated it in two halves, the contrivance bearing some outward resemblance to a portable public-address system.