Meaning of “tooth fairy” in the English Dictionary

british dictionary

"tooth fairy" in British English

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tooth fairynoun [ C ]

uk /ˈtuːθ ˌfeə.ri/ us /ˈtuːθ ˌfer.i/

an imaginary being who children believe takes away a baby tooth that has come out and leaves them money instead

(Definition of “tooth fairy” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)