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Definition of castor noun from the Oxford Advanced Learner's Dictionary

castor

noun
 
/ˈkɑːstə(r)/
 
/ˈkæstər/
(British English)
(North American English caster)
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  1. one of the small wheels fixed to the bottom of a piece of furniture so that it can be moved easily
    Word Originlate 17th cent. relating to a small container with holes in the top used for sprinkling: originally a variant of caster, in the general sense ‘something that casts’.
trait
noun
 
 
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