Mushroom :  (noun)
1: common name for an edible agaric (contrasting with the inedible toadstool) [ant: toadstool]
2: any of various fleshy fungi of the subdivision Basidiomycota consisting of a cap at the end of a stem arising from an underground mycelium
3: a large cloud of rubble and dust shaped like a mushroom and rising into the sky after an explosion (especially of a nuclear bomb) [syn: mushroom cloud, mushroom-shaped cloud] ... ( more )

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Ectocarpales, Phaeophyceae, algae, autophyte, ball, balloon, bead, bean, blossom, blow up, bracken, brew, brown algae, burgeon, burst, climber, conferva, confervoid, conglobulate, creeper, detonate, develop, diatom, fern, flourish, fruits and vegetables, fucus, fungi, fungus, gather, germinate, globe, go off, grapevine, green algae, grow, grow up, gulfweed, herb, heterophyte, hypertrophy, increase, ivy, kelp, legume, lentil, liana, lichen, liverwort, mature, mold, molds, moss, newly-rich, nouveau-riche, outgrow, overdevelop, overgrow, overtop, parasite, parasitic plant, parvenu, pea, perthophyte, phytoplankton, planktonic algae, plant families, procreate, puffball, pullulate, pulse, red algae, reproduce, rockweed, rust, saprophyte, sargasso, sargassum, sea lentil, sea moss, sea wrack, seaweed, shoot up, smut, snowball, sphere, spherify, spring up, sprout, sprout up, succulent, thallogens, thrive, toadstool, tower, upshoot, upspear, upspring, upsprout, upstart, vegetate, vetch, vine, wax, wort, wrack,