2. Making a noise like thunder; sounding loud and deep; sonorous.

— Thun"der*ous*ly, adv.

Thun"der*proof` (?), a. Secure against the effects of thunder or

lightning.

Thun"der*show`er (?), n. A shower accompanied with lightning and

thunder.

Thun"der*stone` (?), n. 1. A thunderbolt, — formerly believed to be a

stone.

Fear no more the lightning flash, Nor the all-dreaded thunderstone.

Shak.