Source : Webster's Revised Unabridged Dictionary (1913)

Grass \Grass\, n. [OE. gras, gres, gers, AS, gr[ae]s, g[ae]rs;
   akin to OFries. gres, gers, OS., D., G., Icel., & Goth. gras,
   Dan. gr[ae]s, Sw. gr[aum]s, and prob. to E. green, grow. Cf.
   {Graze}.]
   1. Popularly: Herbage; the plants which constitute the food
      of cattle and other beasts; pasture.

   2. (Bot.) An endogenous plant having simple leaves, a stem
      generally jointed and tubular, the husks or glumes in
      pairs, and the seed single.

   Note: This definition includes wheat, rye, oats, barley,
         etc., and excludes clover and some other plants which
         are commonly called by the name of grass. The grasses
         form a numerous family of plants.

   3. The season of fresh grass; spring. [Colloq.]

            Two years old next grass.             --Latham.

   4. Metaphorically used for what is transitory.

            Surely the people is grass.           --Is. xl. 7.

   Note: The following list includes most of the grasses of the
         United States of special interest, except cereals. Many
         of these terms will be found with definitions in the
         Vocabulary. See Illustrations in Appendix.

Grass \Grass\, v. t. [imp. & p. p. {Grassed}; p. pr. & vb. n.
   {Grassing}.]
   1. To cover with grass or with turf.

   2. To expose, as flax, on the grass for bleaching, etc.

   3. To bring to the grass or ground; to land; as, to grass a
      fish. [Colloq.]

Grass \Grass\, v. i.
   To produce grass. [R.] --Tusser.

Source : WordNet®

grass
     v 1: shoot down, of birds
     2: cover with grass; "The owners decided to grass their
        property"
     3: spread out clothes on the grass to let it dry and bleach
     4: cover with grass [syn: {grass over}]
     5: feed with grass
     6: give away information about somebody; "He told on his
        classmate who had cheated on the exam" [syn: {denounce}, {tell
        on}, {betray}, {give away}, {rat}, {shit}, {shop}, {snitch},
         {stag}]

grass
     n 1: narrow-leaved green herbage: grown as lawns; used as pasture
          for grazing animals; cut and dried as hay
     2: German writer of novels and poetry and plays (born 1927)
        [syn: {Gunter Grass}, {Gunter Wilhelm Grass}]
     3: animal food for browsing or grazing [syn: {eatage}, {forage},
         {pasture}, {pasturage}]
     4: street names for marijuana [syn: {pot}, {green goddess}, {dope},
         {weed}, {gage}, {sess}, {sens}, {smoke}, {skunk}, {locoweed},
         {Mary Jane}]