dart

dart is a Noun

Definition:

[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] A fish; the dace. See Dace. Dart sac (Zoöl.), a sac connected with the reproductive organs of land snails, which contains a dart, or arrowlike structure.