To save this word, you'll need to log in.
Definition of the tooth fairy
: an imaginary creature who is supposed to leave money for children while they sleep in exchange for a tooth that has come out
Comments on the tooth fairy
What made you want to look up the tooth fairy? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
July 2020 Words of the Day Quiz
- Which is a synonym of mien?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Share the tooth fairy