Word.ws English Dictionary

slag heap

slag heap noun: a man-made mound or heap formed with the waste material (slag) as a by-product of coal mining. Can also refer to the waste by-product from a foundry or furnace, formed into such a mound.

Noun

slag heap (plural slag heaps)

  1. A man-made mound or heap formed with the waste material (slag) as a by-product of coal mining. Can also refer to the waste by-product from a foundry or furnace, formed into such a mound.
    • As the Lothian Plain is reached, collieries and slag heaps begin to appear, although much of the surrounding country remains unspoiled.1952 January, H. A. Vallance, “The Waverley Route”, in Railway Magazine, page 16
    • The Borinage coalfield around Mons is another attractive area for the railway enthusiast; it is rather like South Lancashire, with its gently undulating landscape studded with slag heaps and pithead gear and criss-crossed by railway lines and tramways.1960 February, J. N. Faulkner, “The Belgian Railways today”, in Trains Illustrated, page 86
    Synonyms:
    spoil heap

Synonyms of slag heap

Forms of slag heap

pluralslag heaps
alternative formslag-heap
alternative formslagheap

Questions about slag heap

What does slag heap mean?
Slag heap means a man-made mound or heap formed with the waste material (slag) as a by-product of coal mining. Can also refer to the waste by-product from a foundry or furnace, formed into such a mound.
What part of speech is slag heap?
Slag heap is a noun.
What is the plural of slag heap?
The plural of slag heap is slag heaps.

Words near slag heap in the dictionary

  1. slades
  2. Sladesbridge
  3. SLAF
  4. slaframine
  5. slag
  6. slag heap
  7. slag heaps
  8. slag off
  9. slag tag
  10. slag tags
  11. slag-bag

Source and license

Adapted from Wiktionary: slag heap (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “slag heap.” Word.ws, https://word.ws/slag_heap. Based on Wiktionary, CC BY-SA 4.0.