mushroom

US /ˈmʌʃˌrum, -ˌrʊm/

UK /ˈmʌʃrʊm/

B1
n. (c./u.)Noun (Countable/Uncountable)Short fungus shaped like an umbrella you can eat
Before you take that mushroom, make sure that it is not poisonous
v.i.Intransitive VerbTo increase in size or degree suddenly and quickly
The amount of work is going to mushroom this week

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