megaphone
A funnel (cone) shaped device held to the mouth, and used for amplifying or directing sound.
This tag also includes electronic megaphones, also known as bullhorns, which are a device that combines a microphone with an amplified horn speaker and are used as a portable PA system.
See also
The following tags are aliased to this tag: bull_horn and bullhorn (learn more).
The following tags implicate this tag: holding_megaphone (learn more).