plural of castor

(mineralogy) A variety of petalite found in Elba.

A hat made from the fur of the beaver. / A heavy quality of broadcloth for overcoats. / Castoreum (bitter exudate of mature beavers).

A pivoting roller attached to the bottom of furniture to allow it to be moved. / A container with a perforated cap for sprinkling its contents, especially salt, pepper, etc.

(Greek mythology) One of the Dioscuri / (astronomy) A double star in the constellation Gemini; alpha (α) Geminorum.

(aviation, of a wheel) able to be turned in different directions; pivoting.

Equipped with castors.

Alternative form of castor oil

The pale yellow vegetable oil extracted from the castor bean; used as a laxative and an industrial lubricant.

The seed of the castor oil plant, Ricinus communis; used in the production of castor oil and of the poison ricin.