Megaphone vs. Loudhailer

Megaphonenoun

A portable, usually hand-held, funnel-shaped device that is used to amplify a person’s natural voice toward a targeted direction.

Megaphonenoun

(figuratively) Mouthpiece or promoter; one who speaks for or publicizes on behalf of another.

Megaphonenoun

(organic compound) a cytotoxic neolignan obtained from the laurel Aniba megaphylla.

Megaphoneverb

To use a megaphone; to speak through a megaphone.

Megaphonenoun

A device to magnify sound, or direct it in a given direction in a greater volume, as a very large funnel used as an ear trumpet or as a speaking trumpet.

Megaphonenoun

a cone-shaped acoustic device held to the mouth to intensify and direct the human voice

Megaphone

A megaphone, speaking-trumpet, bullhorn, blowhorn, or loudhailer is usually a portable or hand-held, cone-shaped acoustic horn used to amplify a person's voice or other sounds and direct it in a given direction. The sound is introduced into the narrow end of the megaphone, by holding it up to the face and speaking into it, and the sound waves radiate out the wide end.

Loudhailernoun

(British) A megaphone or bullhorn.