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

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

As this lightweight spray sets your makeup, your skin will enjoy a dose of hydrating glycerin and moisturizing castor oil. —Jennifer Hussein, Allure, 3 Oct. 2024

Whichever brand happens to be the household favourite — KTC coconut oil, Vatika, Dabur Amla, even castor oil or rosemary oil — hair oiling is a tradition that has been passed down through generations. —Varsha Patel, refinery29.com, 25 Sep. 2024

Word History

Etymology

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

First Known Use

1746, in the meaning defined above

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