Noun
an electronic amplification system used as a communication system in public areas
Source: WordNetMarlowe anticipated Whitman's barbaric yawp by setting up a national PA system of blank verse – a rising iambic system of sound to suit the new success story. Marshall McLuhan
I used my mother's radio as a PA system. I'd take the telephone, the speaking part, and take those two leads off and lead them into the radio and the sound would come out of the speaker. Les Paul
Feedback that occurs from a vocal mic into a PA system is usually avoided. Source: Internet
At North Middle, students stepped into the hallway at 10 a.m. for a moment of silence, while the victims’ names were read aloud over the PA system. Source: Internet
And yet a no point did we see any staff out on the platforms, no-one speaking into a PA system telling us to stand clear of the closing doors. Source: Internet
Games were played, draw prizes were up from grabs, pictures were posed for and Kodi the mascot made the rounds as the music pumped over the PA system. Source: Internet