Dart n.
 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.]
 4. Zool. A fish; the dace. See Dace.
 Dart sac Zool., a sac connected with the reproductive organs of land snails, which contains a dart, or arrowlike structure.