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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Geology The mass of rock underlying a mineral deposit in a mine.
  • n. Geology The underlying block of a fault having an inclined fault plane.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The section of rock that extends below a diagonal fault line (the corresponding upper section being the hanging wall).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the lower wall of an inclined fault


foot +‎ wall (Wiktionary)



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