To sing or utter in falsetto.
A person who sings in falsetto.
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.
Utter a yowl.
Express by yowling; utter with a yowl.
A prolonged, loud cry, like the sound of an animal; a wail; a howl.