1. (Science: zoology) Any sharp organ of offense and defense, especially when connected with a poison gland, and adapted to inflict a wound by piercing; as the caudal sting of a scorpion. The sting of a bee or wasp is a modified ovipositor. The caudal sting, or spine, of a sting ray is a modified dorsal fin ray. The term is sometimes applied to the fang of a serpent.
2. (Science: botany) A sharp-pointed hollow hair seated on a gland which secrets an acrid fluid, as in nettles. The points of these hairs usually break off in the wound, and the acrid fluid is pressed into it.
5. A goad; incitement.
6. The point of an epigram or other sarcastic saying.
Origin: AS. Sting a sting. See Sting. An organ present in some organisms that produces poisonous substances usually as a means of defense.