noun

toadstool

TOHD-stool/ˈtəʊdstuːl/

A mushroom, especially one thought poisonous or inedible.

The red-capped toadstool grows among moss and fallen leaves.

Two naturally red-capped, white-spotted fly agaric mushrooms growing from moss and leaf litter, one angled to reveal pale gills beneath its cap.
Etymology

The name apparently imagines a mushroom as a toad's seat; toads themselves were thought highly poisonous. Originally used for umbrella-shaped fungi generally, it later became especially associated with poisonous or inedible kinds.

More examples

  • The illustration showed a cluster of toadstools on the forest floor.
  • The child pointed to a small toadstool after the rain.
  • The guide warned against assuming a toadstool was safe to eat.

Forms

toadstool · toadstools

Similar words

mushroom
Mushroom is the broad familiar term; toadstool often implies an inedible or poisonous kind, but is not a reliable safety category.