castor bean

noun

1. the seed of the castor-oil plant.
2. castor-oil plant.

castor bean

noun

1. See castor-oil plant
   another name for castor-oil plant
2. the seed of this plant

Other Words From

• castor-bean adjective

Word History and Origins

Origin of castor bean¹

1810–20, Americanism; short for castor-oil bean

Example Sentences

Researchers check to see that the protein doesn’t look too similar to a number of toxic proteins that exist in nature like venoms, or ricin, which comes from unprocessed castor beans.

From Popular-Science

Considerable quantities of this article have been manufactured in Illinois from the palma christi, or castor bean.

From Project Gutenberg

The castor bean pomace is good for anything in the poor soils of Southern Illinois.

From Project Gutenberg

Mr. Earle was questioned about the use of castor bean pomace for strawberries.

From Project Gutenberg

Having concluded to try the castor bean, I wish to ask some information.

From Project Gutenberg

This resemblance is responsible for some of the popular names, such as "castor-bean tick," etc.

From Project Gutenberg