death cap

noun

: a very poisonous mushroom (Amanita phalloides) of deciduous woods of North America and Europe that varies in color from pure white to olive or yellow and has a prominent volva at the base

called also death cup

Examples of death cap in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The Victorian government issued a warning in early 2023 that death cap mushrooms were growing in the region. Rachel Treisman, NPR, 7 June 2025 The prosecution accuses her of knowingly serving the guests lethal death cap mushrooms as part of a Beef Wellington at her home in Leongatha, a town of about 6,000 about 84 miles from Melbourne. Reuters, NBC news, 5 June 2025 The court has previously heard that death cap mushrooms grow near oak trees. Hilary Whiteman, CNN Money, 4 June 2025 The next day, all four of the guests were hospitalized with poisoning from death cap mushrooms — or amanita phalloides — which were added to the beef and pastry dish. Greg Wehner, FOXNews.com, 30 Apr. 2025 In April 2023, just months before Patterson had her relatives over for lunch, the Victoria Department of Health issued an advisory warning that death cap mushrooms were growing in the state. Rachel Treisman, NPR, 2 May 2025 But at that point, her guests had been diagnosed with suffering from death cap poisoning. Greg Wehner, FOXNews.com, 30 Apr. 2025 Among them is the death cap mushroom which is highly toxic and often leads to a quick death if wrongly ingested. Stephen Underwood, Hartford Courant, 29 Apr. 2025 For instance, the lethal death cap mushroom contains a toxin that is virtually tasteless. Gordon G. Chang, MSNBC Newsweek, 8 Apr. 2025

Word History

First Known Use

1925, in the meaning defined above

Time Traveler
The first known use of death cap was in 1925

Browse Nearby Words

Cite this Entry

“Death cap.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/death%20cap. Accessed 20 Jun. 2025.

Kids Definition

death cap

noun
: a very poisonous mushroom that varies in color from pure white to olive to yellow and has an obvious swollen covering about the base

called also death cup

Medical Definition

death cap

noun
: a very poisonous mushroom of the genus Amanita (A. phalloides) of deciduous woods of North America and Europe that varies in color from pure white to olive or yellow and has a prominent volva at the base

called also death cup

see thioctic acid
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