slaggy

/ˈslæɡi/
adjective
  1. Covered with or resembling slag (the waste material from metal smelting); rough, clinker-like.
    • After the furnace cooled, the slaggy residue was hard and sharp.
    • The path was treacherous with slaggy rocks that could cut your boots.
    • The old industrial site was left with a slaggy, blackened ground.
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What does "slaggy" mean? | whatsthatwordmean | whatsthatwordmean