Definition of "falsetto"

(singing, uncountable) The "false" (singing) voice in any human, usually airy and lacking a purity of vowels; created by utilizing the next highest vocal folds above those used for speech and normal range singing. It is commonly confused with the head voice register.  examples

(music, countable) A person who sings in falsetto.  examples

To sing or utter in falsetto.  examples