Slag 

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!

Slag by anymous :) May 29, 2010

slag 

a buster-ass chick. Sighting a slag is never pleasant and destroys any good vibes. Slags are generally cock-hungry and persistent.

damnit! How does Lisa find us wherever we go? She's such a slag! I feel like I'm going to throw up when she's around. Well... at least Jonny'll FUUUUCK 'ER!

slag by Drew Rosenhaus August 12, 2007

slag 

To insult and bad mouth

Those guys keep slagging me off

slag by beef curtains April 18, 2003

slag 

Cheap low-life female, usually predatory,trashily dressed who'll offer herself for sex at every opportunity, an expert at 'Man-snatching': men who already have a respectable female partner.
A destroyer of relationships, slutty, bad-mouthed, overly made up harridans who love any form of sexual contact, often at the expense of established relationships.

Rachel is a right slag!, three times this week she's hung around the pool room and has succeeded in shagging four married men!

slag by Inja November 24, 2007

slag 

1. A combination of the words slut and hag.

2. A promiscuous woman, usually found unattractive, that has very low standards when choosing sexual partners.

I can't believe that slag is back at this bar. I think she's already fucked everyone here.

slag by Queen D September 5, 2006

slag 

1. A Cybertronian curse word.
2. A Dinobot that turns into a Triceratops
3. What is formed when you melt down a Decepticon.

1. "Raw Energon, right through your twisted spark. TAKE IT! TAKE IT, YOU SICKENING PICE OF SLAG!" - Depth Charge
2. "Me Slag say you full of beryllium baloney!" - Slag
3. Man, look at all this slag.

slag by Dreadlock February 13, 2008

slag 

The rubbish left on top of pure iron in the blast furnace

scientific name:
'Calcium Silicate'

slag by kelly February 18, 2004