Definitions from Wiktionary (Castor)

▸ noun:  A hat made from the fur of the beaver.
▸ noun:  A heavy quality of broadcloth for overcoats.
▸ noun:  Castoreum (bitter exudate of mature beavers).
▸ noun:  Any of various nymphalid butterflies of the genus Ariadne, of Africa and Asia.
▸ noun:  (mineralogy) A variety of petalite found in Elba.
▸ noun:  (especially UK) Alternative spelling of caster, especially in its senses
▸ noun:  A pivoting roller attached to the bottom of furniture to allow it to be moved.
▸ noun:  A container with a perforated cap for sprinkling its contents, especially salt, pepper, etc.
▸ noun:  (Greek mythology) One of the Dioscuri
▸ noun:  (astronomy) A double star in the constellation Gemini; alpha (α) Geminorum.
▸ noun:  A village and civil parish in city of Peterborough district, Cambridgeshire, England (OS grid ref TL1298).
▸ noun:  A town in Alberta, Canada. From French castor (“beaver”).
▸ noun:  A village in Bienville Parish, Louisiana, United States. From French castor (“beaver”).
▸ noun:  A surname.

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