First Known Use: 15th century
Dictionary
1mushroom
noun mush·room \ˈməsh-ˌrüm, -ˌru̇m; chiefly Northern & Midland -ˌrün; dial ˈmə-shə-ˌrüm, -ˌru̇m, -ˌrün\
: a fungus that is shaped like an umbrella; especially : one that can be eaten
Full Definition of MUSHROOM
1
a : an enlarged complex aboveground fleshy fruiting body of a fungus (as a basidiomycete) that consists typically of a stem bearing a pileus; especially : one that is edible b : fungus
2
: upstart
3
: something resembling a mushroom
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Origin of MUSHROOM
Middle English musheron, from Anglo-French musherum, musseron, from Late Latin mussirion-, mussirio
Rhymes with MUSHROOM
abloom, assume, backroom, ballroom, barroom, bathroom, bedroom, boardroom, bridegroom, broadloom, chat room, checkroom, classroom, clean room, cloakroom, coatroom, consume, costume, courtroom, darkroom, dayroom, entomb, enwomb, exhume, foredoom, front room, great room, greenroom, guardroom, gun room, headroom, heirloom, homeroom, houseroom, illume, inhume, jibboom, Khartoum, legroom, legume, lunchroom, men's room, mudroom, newsroom, perfume, playroom, poolroom, pressroom, presume, push broom, relume, restroom, resume, salesroom, schoolroom, Scotch broom, sea room, showroom, sickroom, simoom, squad room, stateroom, stockroom, storeroom, strong room, subsume, sunroom, taproom, Targum, tearoom, throne room, toolroom, wardroom, washroom, weight room, whisk broom, white room, workroom
2mushroom
verb
: to increase or develop very quickly
: to collect wild mushrooms
Full Definition of MUSHROOM
intransitive verb
1
a : to well up and spread out laterally from a central source b : to become enlarged or extended : grow
2
: to collect wild mushrooms
3
: to spring up suddenly or multiply rapidly
See mushroom defined for English-language learners
First Known Use of MUSHROOM
1893
Related to MUSHROOM
MUSHROOM Defined for Kids
1mushroom
noun mush·room \ˈməsh-ˌrüm, -ˌru̇m\
Definition of MUSHROOM for Kids
: a part of a fungus that bears spores, grows above ground, and suggests an umbrella in shape
2mushroom
verb
mush·roomedmush·room·ing
Definition of MUSHROOM for Kids
: to appear or develop suddenly or increase rapidly <The town's population has mushroomed.>
Medical Dictionary
mushroom
noun mush·room \ˈməsh-ˌrüm, -ˌru̇m\
Medical Definition of MUSHROOM
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