The Collaborative International Dictionary of English v.0.48:

Dart \Dart\ (d[aum]rt), n. [OF. dart, of German origin; cf. OHG.
   tart javelin, dart, AS. dara[eth], daro[eth], Sw. dart
   dagger, Icel. darra[eth]r dart.]
   1. A pointed missile weapon, intended to be thrown by the
      hand; a short lance; a javelin; hence, any sharp-pointed
      missile weapon, as an arrow.
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            And he [Joab] took three darts in his hand, and
            thrust them through the heart of Absalom. --2 Sa.
                                                  xviii. 14.
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   2. Anything resembling a dart; anything that pierces or
      wounds like a dart.
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            The artful inquiry, whose venomed dart
            Scarce wounds the hearing while it stabs the heart.
                                                  --Hannan More.
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   3. A spear set as a prize in running. [Obs.] --Chaucer.
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   4. (Zool.) A fish; the dace. See Dace.
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   Dart sac (Zool.), a sac connected with the reproductive
      organs of land snails, which contains a dart, or arrowlike
      structure.
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