a colorless to pale yellow, viscid liquid, usually obtained from the castor bean by a pressing process: used as a lubricant, in the manufacture of certain soaps and creams, and in medicine chiefly as a cathartic.
- Also called ricinus oil.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use castor oil in a sentence
The list includes everything from common favorites like coconut oil and dead sea salt to earth wax and fermented castor oil.Best aluminum-free deodorant: Keep odor at bay naturally with these formulations | Irena Collaku | August 23, 2021 | Popular-Science
Just prior to the contest, he chugs an entire bottle of castor oil and tops it off with an egg.
Carbolic Acid … liquid … oil … sweet oil … castor oil … aperient … Epsom Salts … white … white of egg.Assimilative Memory | Marcus Dwight Larrowe (AKA Prof. A. Loisette)
Now, when castor-oil goes right, it is one thing; but when it goes wrong, it is another.The Works of Robert Louis Stevenson - Swanston Edition Vol. 25 (of 25) | Robert Louis Stevenson
His general style is sincere; he means well; but his words, like cold-drawn castor oil, don't go down with overmuch gusto.Our Churches and Chapels | Atticus
In some inland districts beans of the castor oil plant, which grows in great abundance, are a lucrative article of trade.
This is, if I recollect right, the castor-oil plant, and here are some of the castor-oil beans which Master Tommy has been eating.Masterman Ready | Captain Frederick Marryat
British Dictionary definitions for castor oil
a colourless or yellow glutinous oil obtained from the seeds of the castor-oil plant and used as a fine lubricant and as a cathartic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012