Thŭn'der-bōlt, n.
n. 1. A shaft of lightning; a brilliant stream of electricity passing from one part of the heavens to another, and especially from the clouds to the earth.
Sense 2. Hence, a daring or irresistible hero. “The Scipios, . . . those thunderbolts of war.”
Sense 3. Ecclesiastical denunciation; fulmination.
He severely threatens such with the thunderbolt of excommunication. Hakewill.
Sense 4. (Geol.) A thunder-stone; a belemnite.