NOUN (3)

1. the act of fixing firmly in place;
- Example: "he ordered the planting of policemen outside every doorway"

2. a collection of plants (trees or shrubs or flowers) in a particular area;
- Example: "the landscape architect suggested a small planting in the northwest corner"

3. putting seeds or young plants in the ground to grow;
- Example: "the planting of corn is hard work"

The Collaborative International Dictionary of English v.0.48:

Plant \Plant\, v. t. [imp. & p. p. Planted; p. pr. & vb. n.
   Planting.] [AS. plantian, L. plantare. See Plant, n.]
   1. To put in the ground and cover, as seed for growth; as, to
      plant maize.
      [1913 Webster]

   2. To set in the ground for growth, as a young tree, or a
      vegetable with roots.
      [1913 Webster]

            Thou shalt not plant thee a grove of any trees.
                                                  --Deut. xvi.
                                                  21.
      [1913 Webster]

   3. To furnish, or fit out, with plants; as, to plant a
      garden, an orchard, or a forest.
      [1913 Webster]

   4. To engender; to generate; to set the germ of.
      [1913 Webster]

            It engenders choler, planteth anger.  --Shak.
      [1913 Webster]

   5. To furnish with a fixed and organized population; to
      settle; to establish; as, to plant a colony.
      [1913 Webster]

            Planting of countries like planting of woods.
                                                  --Bacon.
      [1913 Webster]

   6. To introduce and establish the principles or seeds of; as,
      to plant Christianity among the heathen.
      [1913 Webster]

   7. To set firmly; to fix; to set and direct, or point; as, to
      plant cannon against a fort; to plant a standard in any
      place; to plant one's feet on solid ground; to plant one's
      fist in another's face.
      [1913 Webster]

   8. To set up; to install; to instate.
      [1913 Webster]

            We will plant some other in the throne. --Shak.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Planting \Plant"ing\, n.
   1. The act or operation of setting in the ground for
      propagation, as seeds, trees, shrubs, etc.; the forming of
      plantations, as of trees; the carrying on of plantations,
      as of sugar, coffee, etc.
      [1913 Webster]

   2. That which is planted; a plantation.
      [1913 Webster]

            Trees of righteousness, the planting of the Lord.
                                                  --Isa. lxi. 3.
      [1913 Webster]

   3. (Arch.) The laying of the first courses of stone in a
      foundation. [Eng.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

planting
    n 1: the act of fixing firmly in place; "he ordered the planting
         of policemen outside every doorway"
    2: a collection of plants (trees or shrubs or flowers) in a
       particular area; "the landscape architect suggested a small
       planting in the northwest corner"
    3: putting seeds or young plants in the ground to grow; "the
       planting of corn is hard work"

Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "planting":
   broadcast, broadcasting, clump, crop, dissemination, growth,
   hassock, insemination, plantation, reforestation, resetting,
   retimbering, seeding, semination, setting, sowing, stand,
   transplantation, tuft, tussock