The Collaborative International Dictionary of English v.0.48:

Mowing \Mow"ing\, n.
   1. The act of one who, or the operation of that which, mows.
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   2. Land from which grass is cut; meadow land.
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   Mowing machine, an agricultural machine armed with knives
      or blades for cutting standing grass, etc. It may be drawn
      by a horse or horses, or propelled by a powered engine.
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The Collaborative International Dictionary of English v.0.48:

Mow \Mow\ (m[=o]), v. t. [imp. Mowed (m[=o]d); p. p. Mowed
   or Mown (m[=o]n); p. pr. & vb. n. Mowing.] [OE. mowen,
   mawen, AS. m[=a]wan; akin to D. maaijen, G. m[aum]hen, OHG.
   m[=a]jan, Dan. meie, L. metere to reap, mow, Gr. 'ama^n. Cf.
   Math, Mead a meadow, Meadow.]
   1. To cut down, as grass, with a scythe or machine.
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   2. To cut the grass from; as, to mow a meadow.
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   3. To cut down; to cause to fall in rows or masses, as in
      mowing grass; -- with down; as, a discharge of grapeshot
      mows down whole ranks of men.
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Easton's 1897 Bible Dictionary:

Mowing
   (Heb. gez), rendered in Ps. 72:6 "mown grass." The expression
   "king's mowings" (Amos 7:1) refers to some royal right of early
   pasturage, the first crop of grass for the cavalry (comp. 1
   Kings 18:5).