castor.
A hat made from the fur of the beaver.
Meaning & usage
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.
Where this word comes from
From Middle French castor, from Old French castor (“beaver”), from Latin castor (“beaver”), from Ancient Greek κάστωρ (kástōr), from Doric Greek κάστον (káston, “wood”).
A variety of petalite found in Elba.
Where this word comes from
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, especially in its senses A pivoting roller attached to the bottom of furniture to allow it to be moved.
Alternative spelling of caster, especially in its senses A container with a perforated cap for sprinkling its contents, especially salt, pepper, etc.
Where this word comes from
Alternative spelling of caster, via cast + -or (the Latinate varient of -er).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.