Definition of megaphone
(Entry 1 of 2)
: a cone-shaped device used to intensify or direct the voice
megaphone
verb
megaphoned; megaphoning; megaphones
Definition of megaphone (Entry 2 of 2)
: to transmit or address through or as if through a megaphone
: to speak through or as if through a megaphone
Buying Guide
Our Reviews team has selected the best computer microphones.
Test Your Vocabulary
Name That Color
-
- Name that color:

Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share megaphone
Time Traveler for megaphone
The first known use of megaphone was in 1878
See more words from the same year