mushroom

A large cloud of rubble and dust shaped like a mushroom and rising into the sky after an explosion (especially of a nuclear bomb).

Any of various fleshy fungi of the subdivision Basidiomycota consisting of a cap at the end of a stem arising from an underground mycelium.

Common name for an edible agaric (contrasting with the inedible toadstool).

Fleshy body of any of numerous edible fungi.

Mushrooms and related fleshy fungi (including toadstools, puffballs, morels, coral fungi, etc.).

Grow and spread fast.

“The problem mushroomed”

Pick or gather mushrooms.

“We went mushrooming in the Fall”