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 In that case, consider something like castor oil which can both strengthen and thicken them. Larry Stansbury, Essence, 1 Apr. 2024 With 65,000 five-star reviews, customers praise Sky Organics’ castor oil for its ability to strengthen strands, sprout new growth, and retain length. Jenn Barthole, Glamour, 29 Mar. 2024 See all Example Sentences for castor oil 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'castor oil.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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

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 30 May. 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

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