noun

• A hat made from the fur of the beaver.
• A heavy quality of broadcloth for overcoats.
• Castoreum (bitter exudate of mature beavers).
• Any of various nymphalid butterflies of the genus Ariadne, of Africa and Asia.
• (mineralogy) A variety of petalite found in Elba.
• (especially UK) Alternative spelling of caster, especially in its senses
• 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.
• A village and civil parish in city of Peterborough district, Cambridgeshire, England (OS grid ref TL1298).
• A town in Alberta, Canada. From French castor (“beaver”).
• A village in Bienville Parish, Louisiana, United States. From French castor (“beaver”).
• A surname.