To sing in a trilling, quavering, or vibratory manner; to modulate with turns or variations; to trill; as, certain birds are remarkable for warbling their songs.
To utter musically; to modulate; to carol.
To cause to quaver or vibrate.
To be quavered or modulated; to be uttered melodiously.
To sing in a trilling manner, or with many turns and variations.
To sing with sudden changes from chest to head tones; to yodel.
A quavering modulation of the voice; a musical trill; a song.
sing or play with trills, alternating with the half note above or below
sing by changing register; sing by yodeling; "The Austrians were yodeling in the mountains"