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

 

kohl

 noun
noun
BrE BrE//kəʊl//
 
; NAmE NAmE//koʊl//
 
[uncountable]
 
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a black powder that is used especially in Eastern countries. It is put around the eyes to make them more attractive. Word Origin late 18th cent.: from Arabic kuḥl.
See the Oxford Advanced American Dictionary entry: kohl