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
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Calabrian bergamot and orange oil), this cuticle-sealing formula hydrates strands from the inside out, recalibrating elasticity and moisture via a blend of butters, aloe vera, and castor oil. Annie Blackman, Allure, 25 May 2025 Brown likens it to a modern take on a matte lip, but arguably more comfortable on, thanks to the likes of shea butter, jojoba and castor oils. Kiana Murden, Vogue, 12 May 2025 The planes were rickety contraptions with no brakes that belched castor oil and had to be dragged to a stop with a tail skid after landing. Victor Luckerson, Smithsonian Magazine, 13 May 2025 But lymphatic massage therapist Sabrina Sweet, the founder of Miss Lymph, also suggests bringing along travel-sized bottle of castor oil with you on vacation. Jessica Ourisman, Forbes.com, 6 May 2025 See All Example Sentences for castor oil

Word History

Etymology

probably from its former use as a substitute for castoreum in medicine

First Known Use

1746, in the meaning defined above

Time Traveler
The first known use of castor oil was in 1746

Browse Nearby Words

Cite this Entry

“Castor oil.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/castor%20oil. Accessed 3 Jun. 2025.

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

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