footwall
footwall · footwalls
The section of rock that extends below a diagonal fault lineThe section of rock that extends below a diagonal fault line (the corresponding upper section being the hanging wall).
US/fˈʊtwˌɔl/
Dictionary text adapted from Wiktionary (Wiktionary contributors, CC BY-SA 4.0) and Open English WordNet / Princeton WordNet (CC BY 4.0, WordNet License); shared under CC BY-SA 4.0. Example sentences and recordings are credited where they appear.