Of or pertaining to mushrooms; as, mushroom catchup.
2.
Resembling mushrooms in rapidity of growth and shortness of duration; short-lived; ephemerial; as, mushroom cities.
Mushroom anchor, an anchor shaped like a mushroom, capable of grasping the ground in whatever way it falls.
Mushroom coral (Zool.), any coral of the genus Fungia. See Fungia.
Mushroom spawn (Bot.), the mycelium, or primary filamentous growth, of the mushroom; also, cakes of earth and manure containing this growth, which are used for propagation of the mushroom.
mushroom cloud, a cloud of smoke rising and then spreading laterally to take on the shape of a mushroom caused by large fires or explosions, esp. nuclear explosions.
... one. Someone's got to go down there and clamp some plastic blocks in the right place on the pile housing. Even then, there's the chance that she might blow in the wrong direction and the whole shebang will go up in big, fat mushroom cloud." ... — The Thirst Quenchers • Rick Raphael