loudspeaker
nounUK /ˌlaʊdˈspiːkə/
US /ˈlaʊdˌspiːkər/
A loudspeaker is a thing that makes sound come out so everyone can hear it.
The teacher used a loudspeaker so the whole class could hear her.
RELATED WORDS
OTHER MEANINGS
2. A device that turns electrical signals into sound, used in music systems.
He turned up the loudspeaker to play his favorite song.
3. A person or thing that loudly announces or spreads ideas.
The newspaper became a loudspeaker for the campaign.
4. An outdoor horn-shaped device for announcing things to crowds.
The lifeguard spoke through a loudspeaker on the beach.