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| cas·tor [ kástər ] (plural cas·tors) |
noun |
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| Definition: |
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1. beaver oil: a brown oily aromatic substance secreted from glands in a beaver's groin. Use: in medicine and perfumes.
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2. beaver fur: the fur of a beaver
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3. fur hat: a hat made of beaver fur or imitation beaver fur
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4. textiles heavy fabric: a heavy woolen cloth
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| [14th century. Via French or Latin< Greek kastōr "beaver"] |