Definition: To tremble; to vibrate; to shake.
Definition: Especially, to shake the voice; to utter or form sound
with rapid or tremulous vibrations, as in singing; also, to trill on a
musical instrument
Definition: To utter with quavers.
Definition: A shake, or rapid and tremulous vibration, of the voice, or
of an instrument of music.
Definition: An eighth note. See Eighth.