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

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

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’
    • ‘It's definitely a chink in the armour for people being able to slag me.’
    • ‘I used to slag him that he was a redneck in a jackeen's body.’
    • ‘As much as certain people like to slag him off, when Jones doesn't play I feel we really struggle for goals.’
    • ‘Although I'm a very powerful man my work chums slag me constantly for my Dublin accent and terrible stutter.’
    • ‘We all get on really well and I've never slagged anybody off.’
    • ‘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.’
    • ‘I was utterly slagged off and called several names.’
    • ‘Meanwhile, Hain himself can slag people off just because they don't conform to his narrow vision of what constitutes a Brit.’
    • ‘There's no need for anyone to slag us off because they don't know us as people.’
    • ‘The thing about Rodney is you don't want to take him too seriously because he's slagged off everyone in the world.’
    • ‘The thing about Ricky is - I mean, I'm not just trying to slag him off - he's a nightmare to work with.’
    • ‘I slagged him off in the pub and everyone went a deadly quiet.’
    • ‘It's kinda funny, people slagged us off for putting all the names on the press release and people still got it wrong.’
    • ‘I mean this is the guy who slagged the woman off every chance he got.’
    • ‘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.’
    • ‘People can think I'm stupid, they can slag me off, but I have tried to put forward both sides.’
    • ‘Fair play to my team mates and everyone at the bar because no one slagged me.’
    • ‘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.’
    • ‘They slagged us off when we first started and said we wouldn't be around for five minutes.’

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/