Excess flux from a weld, usu. projecting in such a manner as to impede fit. Removed by grinding, filing, or the use of a slag hammer.
That guy shouldn't have access to an arc welder! He has an inch of slag for every damned joint!
by Ike January 26, 2005
Get the slag mug.
Hag + slut = slag

Old hookers!
Me: Damn, that Karissa Shannon and Kristina Shannon, they're a bunch of slags.
Neppy: Agreed.
by yayafest January 27, 2009
Get the slag mug.
a buster-ass chick. Sighting a slag is never pleasant and ruins any good vibes while around. Slags are generally cock-hungry and very 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!
by Drew Rosenhaus August 10, 2007
Get the slag mug.
1. To destoy something technological

2. To reduce something to slag i.e.
the vitreous mass left as a residue by the smelting of metallic ore.
from Low German slagge, from Middle Low German.

Slagged entered the realm of slang through its extensive use in Transformers: Beast Wars (1996) predating its use in Batman Beyond
Did you see that scene in Office space where they totally slagged the fax machine
by In Google We Trust March 18, 2005
Get the Slagged mug.
Noun: A woman that enjoys sexual intercourse with many partners. She is usually very unattractive and persistent with her targets. She often goes for several members of the same team. This could include a college football, basketball, or especially hockey team. She will have no self respect, nor will she recieve any in return. And although most do not like to admit when they have become the victim of such a swamp creature, it usually inspires a good locker room story.

Other forms:
slaggery
slagtastic
slagism
"I went into Rick's room this morning to wake him up for the game, and what do I see, but the largest whale of a slag known to man."

"So Patty was makin' out with this chick at the bar, and then on the walk home Joe finger blasted her on the street. What a fucking slag."

"If you wanna talk slagtastic, lets talk about Katelyn Brown. I've never seen a girl begging for an eiffel tower quite so badly."
by Stop 'n Pop November 12, 2007
Get the slag mug.
Look at that slag, I heard she got brown eyed last tuesday.
by Sym Dawnderson January 27, 2009
Get the Slag mug.
An individual (usually a woman) who lives by the radical proposition that they should have sex with whomever they want and not give a shit what random judgmental twats who seem to think it's any of their business think.
"Man, Brighton is absolutely full of slags, and that's just the men. ;)"
by TheAutisticAtheist May 1, 2013
Get the Slag mug.