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Definition of black lung noun from the Oxford Advanced Learner's Dictionary

black lung

noun
 
/ˌblæk ˈlʌŋ/
 
/ˌblæk ˈlʌŋ/
[uncountable] (especially North American English)
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  1. a lung disease caused by breathing in coal dust over a long period of time
See black lung in the Oxford Advanced American Dictionary
trait
noun
 
 
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