The tooth fairy is an imaginary creature. Children are told that if they put a tooth that comes outunder their pillow, the tooth fairy will take it away while they are sleeping andleave a coin in its place.
tooth fairy in British English
(tuːθ ˈfɛərɪ)
noun
the tooth fairy is an imaginary creature. Children are told that if they put a tooth that comes out under their pillow, the tooth fairy will take it away while they are sleeping and replace it with a coin
tooth fairy in American English
Folklore
a fairy who puts money under a child's pillow in exchange for a fallen-out tooth placed there by the child