D defs.my
Entry 2 senses Webster, 1913

Thunderstone

· Thun·der·stone · IPA
01 n. A thunderbolt, -- formerly believed to be a stone.
  1. 1.
    A thunderbolt, -- formerly believed to be a stone.
    “Fear no more the lightning flash, Nor the all-dreaded thunderstone.” Shak.
  2. 2.
    A belemnite. See Belemnite.(Paleon.) See: Belemnite