inky cap


Definition of inky cap

: a mushroom (genus Coprinopsis, especially C. atramentaria) whose pileus deliquesces into an inky fluid after the spores have matured

called also ink cap

Illustration of inky cap

Illustration of inky cap

First Known Use of inky cap

1923, in the meaning defined above

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The first known use of inky cap was in 1923

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Cite this Entry

“Inky cap.” The Dictionary, Merriam-Webster Inc., Accessed 8 December 2019.

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Rhyming Dictionary: Words that rhyme with inky cap Encyclopedia article about inky cap

Comments on inky cap

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to constrict the range or activity of

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