peneplain

English Thesaurus

1. a more or less level land surface representing an advanced stage of erosion undisturbed by crustal movements (noun.object)

hypernym	:	champaign, field, plain,
definition	:	extensive tract of level open land (noun.object)

domain category	:	geology,
definition	:	a science that deals with the history of the earth as recorded in rocks (noun.cognition)