castor oil

noun

Definition of castor oil

: 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

But unlike rosemary oil and vitamin B5, both of which have studies that back up their aid in hair growth, scientific evidence surrounding castor oil is lacking. Kaleigh Fasanella, Allure, "Can Castor Oil Help Your Hair Grow? We Asked the Experts," 19 July 2018 While castor oil can become gummy in engines, the violet cress oil has less of a tendency to do this. John Wenz, Popular Mechanics, "This Purple Plant Has a Secret That Could Replace Synthetic Engine Oil," 27 Aug. 2018 This formula is enhanced with botanicals and castor oil. Tiffany Dodson, SELF, "7 Mistakes You’re Making When Doing a Twist Out," 13 Sep. 2018 There are microfibers in it that allegedly help build volume, while argan, jojoba, and coconut oil (note: not castor oil) help condition. Shannon Barbour, The Cut, "CoverGirl’s New Mascaras Condition and Thicken Lashes," 2 May 2018 The oil works similar to castor oil, but more efficiently at high temperatures. John Wenz, Popular Mechanics, "This Purple Plant Has a Secret That Could Replace Synthetic Engine Oil," 27 Aug. 2018 Some other readers have had success getting rid of skin tags by applying castor oil to them. Joe Graedon, M.s., And Teresa Graedon, Houston Chronicle, "Changing washcloths daily helps control acne," 23 June 2018 My neighbor suggested castor oil and gave me a little container of it. Joe Graedon, M.s., And Teresa Graedon, Houston Chronicle, "Changing washcloths daily helps control acne," 23 June 2018 Simply find a mound, make an opening, pour in a cup of a homemade mixture (blend 1 cup warm water, 4 tbsp. dishwashing liquid, and 3 ounces castor oil), and then stomp on the hole. Sunset, "Top Tips to Keep Plants Safe from Garden Pests," 22 Jan. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'castor oil.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of castor oil

1746, in the meaning defined above

History and Etymology for castor oil

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

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Statistics for castor oil

Last Updated

28 Mar 2019

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Time Traveler for castor oil

The first known use of castor oil was in 1746

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More Definitions for castor oil

castor oil

noun

English Language Learners Definition of castor oil

: a thick oil made from a tropical plant and used in the past as a medicine

castor oil

noun
cas·​tor oil | \ ˈka-stər-\

Kids Definition of castor oil

: a thick yellowish liquid that comes from the seeds ( castor beans ) of a tropical herb and is used as a lubricant and as a strong laxative

castor oil

noun

Medical Definition of castor oil

: a pale viscous fatty oil from castor beans used especially as a cathartic or lubricant

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More from Merriam-Webster on castor oil

Rhyming Dictionary: Words that rhyme with castor oil

Spanish Central: Translation of castor oil

Britannica.com: Encyclopedia article about castor oil

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