Castor
UK /ˈkɑːs.tə/ · US /ˈkæs.tɚ/ proper noun, noun
Also a form of caster
Forms castors
- proper noun (Greek mythology) One of the Dioscuri
- proper noun (astronomy) A double star in the constellation Gemini; alpha (α) Geminorum.
- proper noun A village and civil parish in city of Peterborough district, Cambridgeshire, England (OS grid ref TL1298).
- proper noun A town in the County of Paintearth, Alberta, Canada. From French castor (“beaver”).
- proper noun A village in Bienville Parish, Louisiana, United States. From French castor (“beaver”).
- proper noun A surname.
- 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 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.
Synonyms
beaver castoreum castorite Alpha Geminorum caster genus Castor
Etymology
From Ancient Greek Κάστωρ (Kástōr), from Ancient Greek κάστωρ (kástōr, “beaver”).
From Middle French castor, from Old French castor (“beaver”), from Latin castor (“beaver”), from Ancient Greek κάστωρ (kástōr), from Doric Greek κάστον (káston, “wood”).
Named from Greek mythology; see Castor and Pollux. The name pollux was given to another mineral with which it was always found.
Alternative spelling of caster, via cast + -or (the Latinate varient of -er).
Webster’s 1913
- noun A genus of rodents, including the beaver. See Beaver.
- noun Castoreum. See Castoreum.
- noun See Caster, a small wheel.
- noun the northernmost of the two bright stars in the constellation Gemini, the other being Pollux.
Etymology [L.]
Etymology [The minerals castor and pollux were so named because found together on the island of Elba. See Castor and Pollux.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “Castor”, CC BY-SA 4.0. Details