Other forms: mushrooms
A mushroom has a stem and a cap; it grows in the forest and goes on pizza. Pick mushrooms, fried mushrooms, a wild mushroom.
It is the fruiting body of a fungus, not the whole organism, and the part underground may be enormous and old. Never eat a wild one on a picture alone — the deadliest species look like edible ones and there is no home test. To mushroom means to grow fast.
1nounmushroomThe fruiting body of a fungus, with a stem and cap.
“She fried some mushrooms with garlic and served them on toast.”
mushroom is a fungus.
Old French moisseron names the fungus; the further origin is unknown.
Old French
moisseron
Anglo-Norman
musherum
Middle English
muscheron
English, today
mushroom
From Middle English muscheron, musseron, from Anglo-Norman musherum, moscheron, from Old French moisseron, of unknown origin: probably derived from Old French mosse, moise "moss"; whence also mousse, as the use first applied to a type of fungus which grows in moss, from Frankish mosu (“moss”) or Old Dutch mosa (“moss”), akin to Old High German mosa (“moor, swamp”), Old High German mos (“moss, bog”), Old High German mios (“moss, mire”), Old English mēos (“moss”), Old English mōs (“bog, marsh”), Old Norse mosi (“moss”), Old Norse myrr (“bog, mire”), from Proto-Germanic musą, musô, miuziz (“mosses, bog”), from Proto-Indo-European mews- (“mosses, mold, mildew”). Displaced native swamm. More at mire. Alternatively, the Old French may be of pre-Roman origin. See Ancient Greek μύκης (“mushroom”). a doublet of moss and mousse.
Etymology from Wiktionary, CC BY-SA