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castor oil
noun
: a pale viscous fatty oil from castor beans used especially as a cathartic and as a lubricant and plasticizer
Examples of castor oil in a Sentence
Recent Examples on the Web
Since using it, she’s noticed considerably less hair fall, thanks to strengthening castor oil and various plant extracts that help provide a healthy environment for hair to thrive.
—Alanna Martine Kilkeary, Glamour, 20 Nov. 2024
Simply add a few drops of this gentle formula to your bath and soak your cares away while moisturizing your skin with aloe, Vitamin E oil, and castor oil.
—Christina Shepherd McGuire, Better Homes & Gardens, 5 Nov. 2024
If your hair is thick or coarse, choose a heavier oil that locks in hydration (such as those that contain coconut oil, castor oil, or olive oil).
—Malia Griggs, Glamour, 25 July 2024
The blend of castor oil, Vitamin E, and organic coconut oil ensures lasting hydration, while the cream creates the most stunning dewy finish.
—Kat Romero, Rolling Stone, 25 Sep. 2024
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Word History
Etymology
probably from its former use as a substitute for castoreum in medicine
First Known Use
1746, in the meaning defined above
Dictionary Entries Near castor oil
Cite this Entry
“Castor oil.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/castor%20oil. Accessed 26 Nov. 2024.
Kids Definition
castor oil
noun
: a pale thick oil obtained from castor beans and used chiefly as a lubricant or a laxative
Medical Definition
castor oil
noun
: a pale viscous fatty oil from castor beans used especially as a cathartic or lubricant
More from Merriam-Webster on castor oil
Britannica.com: Encyclopedia article about castor oil
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