Emily Dickinson Lexicon

SOD, n. [D. zoode; G. sode. I suspect the radical sense is set, fixed; W. sodi, to set.]

Turf; sward; that stratum of earth on the surface which is filled with the roots of grass, or any portion of that surface. It differs from clod, which may be a compact mass of earth without roots; but sod is formed by earth held together by roots.