Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

wall rock


Definition of wall rock

  1. :  a rock through which a fault or vein runs

Learn More about wall rock

Seen and Heard

What made you want to look up wall rock? Please tell us where you read or heard it (including the quote, if possible).