First Known Use: 1552
Dictionary
1slag
noun \ˈslag\
Definition of SLAG
: the dross or scoria of a metal
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Origin of SLAG
Middle Low German slagge
Other Metals and Metallurgy Terms
2slag
noun
Definition of SLAG
slang chiefly British : a lewd or promiscuous woman
Origin of SLAG
earlier argot slag coward, worthless person
First Known Use: circa 1958
3slag
transitive verb
slaggedslag·ging
Definition of SLAG
chiefly British : to criticize harshly
Origin of SLAG
probably from 2slag
First Known Use: 1971
SLAG Defined for Kids
slag
noun \ˈslag\
Definition of SLAG for Kids
: the waste left after the melting of ores and the separation of the metal from them
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