Quaver

imp. & p. p. Quavered; p. pr. & vb. n. Quavering

1. To tremble; to vibrate; to shake.
2. 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

1. To utter with quavers.

   We shall hear her quavering them . . . to some sprightly airs of the opera.

1. A shake, or rapid and tremulous vibration, of the voice, or of an instrument of music.
2. An eighth note. See Eighth. (Mus.)