footwall

F4O1O1T1W4A1L1L1

noun

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

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Meanings

nounfootwall (plural footwalls)

plural footwalls

  1. geographyThe section of rock that extends below a diagonal fault line (the corresponding upper section being the hanging wall).
  2. businessThe under wall of an enclosed vein.

Synonyms & antonyms

Also see
ledger wall

Origin

From foot + wall.

Full word history & related roots →
Cite this entry
APA

footwall. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/footwall

MLA

“footwall.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/footwall. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “footwall,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/footwall.

Source: footwall on Wiktionary, CC BY-SA 4.0.