a word used against women/girls by men/boys to insult.
it basically means someone who has slept around alot or has done other sexual things, people often use this in irrelivent situations, by saying it to someone who isnt a slag at all.
person one - i shagged him last night
person two - you slag!
by anymous :) May 29, 2010
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Apart from other more obvious meanings, Slag is a waist product produced inside a Blast Furnace. It is produced when Limestone is used to remove impurities in Iron. This can be difficult to dispose of and may form slag heaps when dumped in the environment. These are large mounds of thrown away slag.
Citizen: I hate all this waist slag polluting the local environment.

Council member: Don't worry; we are currently working on removing all of the slag heaps.
by Chemistry12345 June 25, 2011
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The word "slag" most notably refers to Vicky Ford, an MP who spends hundreds of thousands of taxpayer money on hotel rooms for sordid sex parties where she promoted children not being fed as part of her slaggy fetish
Wow isn't that Vicky Ford MP a big old slag
by Rashford for PM October 23, 2020
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A woman who is infinately cock-hungry and shags many men behind her partner, usually with a wide pussy
Slag's friend: Theres 60 men with boners from here to the door. Can you make it?
Slag: No! (starts sucking the nearest man's cock and telling the others to stuf their dicks in)
by pieman349 February 23, 2010
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A filthy whore who roots all the boys and loves it!
Here comes Martha the slag, she's just done the whole team
by La Quandanisa March 31, 2009
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Someone who cheats on their boyfriend or girlfriend with someone else :)
For example : my boyfriend went on holiday so I cheated on him while he was away with someone else -that makes me a slag
by TRUE_STORY_LOL September 29, 2018
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Look at that slag, I heard she got brown eyed last tuesday.
by Sym Dawnderson January 27, 2009
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