Definition of "grime"

noun:
- Dirt, grease, soot, etc. that is ingrained and difficult to remove.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License
- A genre of urban music that emerged in London, England, in the early 2000s, primarily a development of UK garage, dancehall, and hip hop.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License
verb:
- To begrime; to cake with dirt.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License