Etymology

From toad +‎ stoneCategory:English compound terms#TOADSTONE.

Noun

toadstone (countable and uncountable, plural toadstones)Category:English lemmas#TOADSTONECategory:English nouns#TOADSTONECategory:English uncountable nouns#TOADSTONECategory:English countable nouns#TOADSTONECategory:English countable nouns#TOADSTONECategory:English entries with incorrect language header#TOADSTONECategory:Pages with entries#TOADSTONECategory:Pages with 1 entry#TOADSTONE

1. A small stone, once believed to be a jewel embedded in the head of a toad, worn as an amulet.
2. (geologyCategory:en:Geology#TOADSTONE) A soft, earthy variety of trap-rock of a brownish-grey colour, looking like an argillaceous deposit.
   • 2004, Robert E Schofield, The Enlightened Joseph Priestley, Pennsylvania State University, published 2004, page 162:

     Rowley-Rag appeared to be the same thing as basalt and toadstone resembled some species of lava.

     Category:English terms with quotations#TOADSTONE