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.
To cry weakly with a soft, high-pitched sound; to whimper; to whine.
A soft cry or whimper; an act of mewling.