The Collaborative International Dictionary of English v.0.48:

Ding \Ding\ (d[i^]ng), v. t. [imp. & p. p. Dinged, Dang
   (Obs.), or Dung (Obs.); p. pr. & vb. n. Dinging.] [OE.
   dingen, dengen; akin to AS. dencgan to knock, Icel. dengja to
   beat, hammer, Sw. d[aum]nga, G. dengeln.]
   1. To dash; to throw violently. [Obs.]
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            To ding the book a coit's distance from him.
                                                  --Milton.
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   2. To cause to sound or ring.
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   To ding (anything) in one's ears, to impress one by noisy
      repetition, as if by hammering.
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