castor bean

noun

: the very poisonous seed of the castor-oil plant

Examples of castor bean 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.
There, authorities discovered a stockpile of dangerous chemicals, including arsenic, liquid mercury and castor beans—the last of which can used to produce the deadly poison ricin. Thomas G. Moukawsher, Newsweek, 7 Nov. 2024 Ricin, a highly lethal toxin extracted from the castor bean plant, is among the deadliest substances known. Nina Turner, Newsweek, 29 Oct. 2024 Suri’s are made of eco-friendly materials like cornstarch and castor beans. Jen Murphy, Outside Online, 21 Oct. 2024 Designed for bike racing, the Density is just as ideal for nordic skiing, thanks to its huge field of vision, arms made from soft-gripping rubber derived from castor beans that can be bent in multiple ways for a custom fit, and photochromic lenses that adjust to whatever light is on the trail. Stephanie Pearson, Outside Online, 10 Oct. 2024 See all Example Sentences for castor bean 

Word History

First Known Use

1819, in the meaning defined above

Time Traveler
The first known use of castor bean was in 1819

Dictionary Entries Near castor bean

Cite this Entry

“Castor bean.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/castor%20bean. Accessed 22 Dec. 2024.

Kids Definition

castor bean

noun
cas·​tor bean
ˈkas-tər-
: the very poisonous seed of the castor-oil plant

Medical Definition

castor bean

noun
cas·​tor bean ˈkas-tər- How to pronounce castor bean (audio)
: the very poisonous seed of the castor-oil plant

More from Merriam-Webster on castor bean

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