QUAVER

quaver. Quaver, v.i. to shake the voice, to vibrate

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Qua″ver, v. i. [imp. & p. p. Quavered (?); p. pr. & vb. n. Quavering.] [[OE. quaven to shake, to tremble; cf. LG. quabbeln to shake, to be soft, of fat substances, quabbe a fat lump of flesh, a dewlap, D. kwabbe, and E. quiver, v.]] 1. 1. To tremble; to vibrate; to shake. Sir I. Newton.
2. 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