

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. (Science: paleontology) A belemnite, or thunderstone.

(Science: zoology) Thunderbolt beetle, 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.

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