- Also castoreum. a brownish, unctuous substance with a strong, penetrating odor, secreted by certain glands in the groin of the beaver, used in medicine and perfumery.
- a hat made of beaver or rabbit fur.
- a heavy woolen cloth used mainly for coats.
- a beaver.
Origin of castor1
- a star of the second magnitude in the constellation Gemini, the more northerly of the two bright stars in this constellation.
Origin of Castor
Examples from the Web for castor
“At the time I remember thinking that he probably did do something inappropriate,” said Castor.How Bill Cosby Allegedly Silenced His Accusers Through A Tabloid Smear Campaign
November 21, 2014
An adult would have to eat about eight castor beans—after first removing the indigestible skin—to die.Ricin: Five Things to Know About It
April 17, 2013
In the meantime, Castor says, “they decided to let everyone sit back on Monday and wait.”Anti-RNC Leaders: The Protests Must Go On
August 26, 2012
According to these sources, Castor said that if Breuer resigned, they could head off the looming constitutional clash.Issa Committee Called for Justice Department Scalp
June 22, 2012
Just prior to the contest, he chugs an entire bottle of castor oil and tops it off with an egg.12 Craziest Pie Scenes
November 21, 2011
For serving, cut into squares, and dust them over with castor sugar.
Dish on a folded napkin, with castor sugar dusted over them.
Mix in gradually the castor sugar and rice, and add the lemon rind.
Beat the white of egg, mix it with the castor sugar, and spread it over the cakes.
To glaze, brush them with a little white of egg, and dust with castor sugar.
- the brownish aromatic secretion of the anal glands of a beaver, used in perfumery and medicine
- the fur of the beaver
- a hat made of beaver or similar fur
- a less common name for beaver 1 (def. 1)
- the second brightest star, Alpha Geminorum, in the constellation Gemini: a multiple star consisting of six components lying close to the star Pollux. Distance: 52 light years
- classical myth See Castor and Pollux
Word Origin and History for castor
late 14c., "beaver," from Old French castor (13c.), from Latin castor "beaver," from Greek Kastor, literally "he who excels," name of one of the divine twins (with Pollux), worshipped by women in ancient Greece as a healer and preserver from disease.
His name was given to secretions of the animal (Latin castoreum), used medicinally in ancient times. (Through this association his name replaced the native Latin word for "beaver," which was fiber.) In English, castor is attested in this sense from c.1600. Modern castor oil is first recorded 1746; it is made from seeds of the plant Ricinus communis but supposedly possesses laxative qualities (and taste) similar to those of beaver juice, and thus so named.
- A bright multiple star in the constellation Gemini, with a combined apparent magnitude of 0.08. Scientific name: Alpha Geminorum.