what is a toadstone
Webster Dictionary(0.00 / 0 votes)Rate this definition: Toadstone(noun) a local name for the igneous rocks of Derbyshire, England; -- said by some to be derived from the German todter stein, meaning dead stone, that is, stone which contains no ores. Toadstone(noun) bufonite, formerly regarded as a precious stone, and worn as a jewel. See Bufonite. Toadstone. The toadstone, also known as bufonite, is a mythical stone or gem thought to be found in, or produced by, a toad, and is supposed to be an antidote to poison.