Dutch edit

Etymology edit

Compound of kolen +‎ gruis.

Pronunciation edit

  • IPA(key): /ˈkoː.lə(n)ˌɣrœy̯s/
  • (file)
  • Hyphenation: ko‧len‧gruis

Noun edit

kolengruis n (uncountable)

  1. slack, small coal particles