DICT.TW Dictionary Taiwan

 Wrest, n.
 1. The act of wresting; a wrench; a violent twist; hence, distortion; perversion.
 2. Active or moving power.  [Obs.]
 3. A key to tune a stringed instrument of music.
    The minstrel . . . wore round his neck a silver chain, by which hung the wrest, or key, with which he tuned his harp.   --Sir W. Scott.
 4. A partition in a water wheel, by which the form of the buckets is determined.
 Wrest pin Piano Manuf., one of the pins around which the ends of the wires are wound in a piano. --Knight.
 Wrest plank Piano Manuf., the part in which the wrest pins are inserted.
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