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button mushroom

noun

Simple Definition of button mushroom

  • : a small, white mushroom that is often eaten as a vegetable

Source: Merriam-Webster's Learner's Dictionary

Full Definition of button mushroom

  1. :  a usually small white mushroom (Agaricus bisporus syn. A. brunnescens) in which the pileus has not yet expanded

1865

First Known Use of button mushroom

1865


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