Source : Webster's Revised Unabridged Dictionary (1913)

Dart \Dart\, n. [OF. dart, of German origin; cf. OHG. tart
   javelin, dart, AS. dara?, daro?, Sw. dart dagger, Icel.
   darra?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.

            And he [Joab] took three darts in his hand, and
            thrust them through the heart of Absalom. --2 Sa.
                                                  xviii. 14.

   2. Anything resembling a dart; anything that pierces or
      wounds like a dart.

            The artful inquiry, whose venomed dart Scarce wounds
            the hearing while it stabs the heart. --Hannan More.

   3. A spear set as a prize in running. [Obs.] --Chaucer.

   4. (Zo["o]l.) A fish; the dace. See {Dace}.

   {Dart sac} (Zo["o]l.), a sac connected with the reproductive
      organs of land snails, which contains a dart, or arrowlike
      structure.