Public Address Systems

noun an abbreviation for 'public address system'

• The PA system in the auditorium allows for clear communication during school assemblies.
• Hey, can you hear me through the PA system? I'm announcing something important.
• I'll crank up the PA system so everyone can hear the music loud and clear.
• Her voice echoed through the room like a PA system, commanding everyone's attention.

noun a vehicle equipped with audio equipment for broadcasting sound, typically used for public announcements or advertising

• The sound truck parked outside the venue was equipped with high-quality audio equipment.
• I heard the sound truck blasting music down the street.
• The sound truck was bumping some sick beats.
• The sound truck symbolized the start of the parade.