Peneplain

n.

1.

(Phys. Geog.) A land surface reduced by erosion to the general condition of a plain, but not wholly devoid of hills; a base-level plain.

Noun

1.

peneplain - a more or less level land surface representing and advanced stage of erosion undisturbed by crustal movements Synonyms: peneplane

champaign, field, geology, peneplane, plain