The Collaborative International Dictionary of English v.0.48:

Nourishment \Nour"ish*ment\, n. [Cf. OF. norrissement.]
   [1913 Webster]
   1. The act of nourishing, or the state of being nourished;
      nutrition.
      [1913 Webster]

   2. That which serves to nourish; nutriment; food.
      [1913 Webster]

            Learn to seek the nourishment of their souls.
                                                  --Hooker.
      [1913 Webster]

WordNet (r) 3.0 (2006):

nourishment
    n 1: a source of materials to nourish the body [syn:
         nutriment, nourishment, nutrition, sustenance,
         aliment, alimentation, victuals]
    2: the act of nourishing; "her nourishment of the orphans saved
       many lives"

Moby Thesaurus II by Grady Ward, 1.0:

38 Moby Thesaurus words for "nourishment":
   TLC, aliment, alimentation, bread, care, daily bread,
   economic support, endowment, food, food chain, keep, livelihood,
   living, maintenance, manna, meat, mothering, nurture, nutriment,
   nutrition, nutriture, pabulum, pap, price support, provision,
   refection, refreshment, subsidization, subsidy, subsistence,
   subvention, support, sustainment, sustenance, sustentation,
   tender loving care, upkeep, victuals