thunderbolt

thunderbolt is a Noun

Definition:

[1] A shaft of lightning; a brilliant stream of electricity passing from one part of the heavens to another, or from the clouds to the earth.

[2] Something resembling lightning in suddenness and effectiveness. The Scipios` worth, those thunderbolts of war. Dryden.

[3] Vehement threatening or censure; especially, ecclesiastical denunciation; fulmination. He severely threatens such with the thunderbolt of excommunication. Hakewill.

[4] A belemnite, or thunderstone. Thunderbolt beetle (Zoöl.), a long-horned beetle (Arhopalus fulminans) whose larva bores in the trunk of oak and chestnut trees. It is brownish and bluish-black, with W-shaped whitish or silvery markings on the elytra.