The earth, i.e. the dry land, called earth after it was separated from the waters, Gen_1:10.
The fields; the plain and open parts of the earth, distinguished from the mountains and hills, and the valleys enclosed between them.
The highest part; or, the first part, or beginning; or, the best part, Heb. the head; that which exceeds other parts in riches or fruitfulness; which he seems to distinguish from the common fields.
Of the dust of the world; of this lower part of the world, which consisteth of dust.