PLAIN


Meaning of PLAIN in English

n.

Any relatively level area of the Earth's surface that exhibits gentle slopes and small local relief (differences in elevation).

Occupying slightly more than one-third of the terrestrial surface, plains are found on all continents except Antarctica. Some are tree-covered, and others are grassy. Still others support scrub brush and bunch grass, and a few are nearly waterless deserts. With certain exceptions, plains have become the sites of major centres of population, industry, commerce, and transportation.

Britannica Concise Encyclopedia.      Краткая энциклопедия Британика.