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English definition of “slag”

slag

noun [U] uk   /slæɡ/ us  

slag noun [U] (WASTE)

[U] waste material produced when coal is dug from the ground, or a substance produced by mixing chemicals with metal that has been heated until it is liquid in order to remove unwanted substances from it
See also

slag noun [U] (WOMAN)

[C] UK slang disapproving a woman who people disapprove of because she has had a lot of sexual partners

slag noun [U] (LIQUID)

[U] Australian English informal for spit noun
(Definition of slag from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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