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

 

clean

 noun
noun
BrE BrE//kliːn//
 
; NAmE NAmE//kliːn//
 
 
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[singular] the act or process of cleaning something The house needed a good clean. Why don’t you give the carpet a clean? Word Origin Old English clǣne, of West Germanic origin; related to Dutch and German klein ‘small’.
See the Oxford Advanced American Dictionary entry: clean