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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1. A man or woman who sleeps around with many people.
2. low quality Coal that is unusable.
1. Katie slepped with John on saturday and then Peter on Sunday. What a Slag.

2. Look at the Slag Heap's next to the coal Mines
by Tony June 12, 2004
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An all-purpose, non-vulgar word, originating from the Transformers cartoons, to be used in place of just about any profanity.
"Oh slag! The Decepticons are attacking!"
"This is a piece of slag."
by Terenn September 9, 2005
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When you're high as hell. Used by Krinks who smoke slag.
by Flanny2701 June 15, 2019
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To get slagged is another word for defeated in anything you do and also has a action meaning to it.
'I was playing basketball and I got slagged by this one good guy'.

It can also be used like an action word " That QB just got slagged from behind."
by Rch247 July 25, 2009
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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 that fucks behind her partners back
you are nothin but a fuckin slag kelly .i hope you catch syphilis because it will probably make your stinking gash smell better
by Anonymous April 6, 2003
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