Definition of slag in English:

slag

noun

  • 1mass noun Stony waste matter separated from metals during the smelting or refining of ore.

    ‘the burning liquid iron was forming a scum of slag’
    • ‘Tell me about Lehigh's interest in supplemental materials, like slag cement.’
    • ‘By contrast, the lunar regolith ‘has a composition similar to mining slag.’’
    • ‘The concentrates are refined by smelting - they are melted, and the impurities are removed as a slag.’
    • ‘The hardened matter was slag, a waste product from metal working, and contained evidence of iron, copper and lead manufacture.’
    • ‘Ground granulated blast furnace slag is used in 53 % of councils in NSW and 23 % in VIC.’
    • ‘Blast furnaces are used to recycle slag, dross, and residues from other processes.’
    • ‘Piles of black slag marked the entrances to small coal mines.’
    • ‘The union has leveled 15 separate charges against Levy, a contractor at Mittal Steel USA, which performs slag processing and metal reclamation.’
    • ‘In highly developed countries, the major components of industrial waste are blast furnace and steel slag, and power station ash.’
    • ‘The road is unusually constructed of compacted iron slag.’
    • ‘Vincent snorted, and turned the doorknob into molten slag once it had swung shut again.’
    • ‘The waste product slag was also increasingly used in road and house building.’
    • ‘We started making turns around the slag piles at the mine.’
    • ‘Some people had even died in slag slides, picking loose bits of coal in order to keep their homes heated.’
    • ‘"Oh, it used to be a slag heap, " John said.’
    • ‘Ores, slag and ash exports during the first seven months amounted to $644 million, up 77 per cent over the same period last year.’
    • ‘In particular, tuyeres in the furnace became blocked with slag.’
    • ‘Under suitable slag conditions vanadium, in quite small quantities, ‘cleans’ the steel and renders it free from slag inclusions.’
    • ‘The blasts shot towards the small shielded orb and reduced the metal to molten slag.’
    • ‘This artificial uranium mine is contained in the slag material from power station coal combustion and deposited in landfills.’
    1. 1.1 Stony material ejected by a volcano; scoria.
      count noun ‘flow after flow of lava, slags, powders, and ejecta cast upon the previous outpourings in grotesque patterns’
      • ‘I watched, slightly shocked, as molten metal slag fell onto the glass, steaming.’
      • ‘Mineral fiber insulation, including fiber glass and rock wool, is produced from either molten glass, slag, or rock.’
      • ‘Kerosene has been used to light pyres constructed of coal slag, old tyres and tar-soaked rail sleepers.’
      • ‘The stats and history of this limestone slag heap are impressive in their own right.’
      • ‘It is usually caused by the scouring action of sand, gravel, slag, earth, and other gritty material.’
      • ‘The blasts shot towards the small shielded orb and reduced the metal to molten slag.’
      • ‘The increasing size of the slag pile poses an ongoing threat to the richest remaining prairie site.’
      • ‘There were areas of bare rock and slag, which were around old gold mines, according to the naturalist.’
      • ‘Thirdly, reduce the clinker content in cement, by intergrinding cementious material like slag, fly ash, or limestone.’
      • ‘Two recycled cementitious materials come to mind immediately - fly ash and slag cement.’
      • ‘The difference in densities of the molten iron and molten slag allow each material to be removed separately from the furnace.’
      • ‘It was a more rustic and northern version of Detroit with escarpments of slag and iron ore.’
  • 2British derogatory, informal A promiscuous woman.

    • ‘But as soon as a women starts to pick and choose who she sleeps with she gets called a slag.’
    • ‘Boys continued to make the same distinction between prospective wives and slags.’
    • ‘The place was full of big bellied old West Ham supporters, complete with navy tattoos with the fat slags from Viz in tow.’
    • ‘If you look beyond the dehumanising stereotypes to the hard facts, it emerges that females in jail are not conniving slags.’
    • ‘Alastair's so used to working in a serious environment, he couldn't believe fellas were coming at him with slags.’
    • ‘She told him Trev had called her a dirty slag after their drink the other night and had refused to sleep with her.’
    • ‘Not so many slags frequent this public house anymore - each time we go in there the ratio of men to women is rising.’
    • ‘The women are slags, either scrawny with straggly blonde hair, or grotesquely fat and bulging out of their tracksuit bottoms.’
    1. 2.1 A contemptible or insignificant person.
      • ‘I created it especially to deal with nosey slags like you!’

verb

  • 1usually as noun slaggingno object Produce deposits of slag.

    ‘the furnace burns at a minimum temperature to reduce slagging’
  • 2British informal with object Criticize (someone) in an abusive and insulting manner.

    ‘my girlfriend was always slagging him off’
    • ‘Although I'm a very powerful man my work chums slag me constantly for my Dublin accent and terrible stutter.’
    • ‘I mean this is the guy who slagged the woman off every chance he got.’
    • ‘They slagged us off when we first started and said we wouldn't be around for five minutes.’
    • ‘Fair play to my team mates and everyone at the bar because no one slagged me.’
    • ‘I used to slag him that he was a redneck in a jackeen's body.’
    • ‘The thing about Rodney is you don't want to take him too seriously because he's slagged off everyone in the world.’
    • ‘I was utterly slagged off and called several names.’
    • ‘People can think I'm stupid, they can slag me off, but I have tried to put forward both sides.’
    • ‘Meanwhile, Hain himself can slag people off just because they don't conform to his narrow vision of what constitutes a Brit.’
    • ‘The thing about Ricky is - I mean, I'm not just trying to slag him off - he's a nightmare to work with.’
    • ‘As much as certain people like to slag him off, when Jones doesn't play I feel we really struggle for goals.’
    • ‘I slagged him off in the pub and everyone went a deadly quiet.’
    • ‘It's definitely a chink in the armour for people being able to slag me.’
    • ‘People slag me off because I'm a larger-than-life character, and that's part of my thing from the past - I lived my life very excessively.’
    • ‘When he does those anthologies he gets slagged by the critics but they're the books that sell and support everything else that he does.’
    • ‘It's kinda funny, people slagged us off for putting all the names on the press release and people still got it wrong.’
    • ‘There's no need for anyone to slag us off because they don't know us as people.’
    • ‘We all get on really well and I've never slagged anybody off.’
    • ‘They even slagged us off for asking the guests to donate money to charity instead of giving us presents.’
    • ‘Of course, if you don't care about that and just want to slag people off, that's a good way to do it.’
    find fault with, censure, denounce, condemn, arraign, attack, lambaste, pillory, disapprove of, carp at, cavil at, rail against, inveigh against, cast aspersions on, pour scorn on, disparage, denigrate, deprecate, malign, vilify, besmirch, run down, give a bad press to
    View synonyms

Origin

Mid 16th century: from Middle Low German slagge, perhaps from slagen ‘strike’, with reference to fragments formed by hammering. The verb sense ‘criticize’ dates from the 1970s.

Pronunciation

slag

/slaɡ/