The Collaborative International Dictionary of English v.0.48:

Nurture \Nur"ture\, v. t. [imp. & p. p. Nurtured; p. pr. & vb.
   n. Nurturing.]
   1. To feed; to nourish.
      [1913 Webster]

   2. To educate; to bring or train up.
      [1913 Webster]

            He was nurtured where he had been born. --Sir H.
                                                  Wotton.
      [1913 Webster]

   Syn: To nourish; nurse; cherish; bring up; educate; tend.

   Usage: To Nurture, Nourish, Cherish. Nourish denotes to
          supply with food, or cause to grow; as, to nourish a
          plant, to nourish rebellion. To nurture is to train up
          with a fostering care, like that of a mother; as, to
          nurture into strength; to nurture in sound principles.
          To cherish is to hold and treat as dear; as, to
          cherish hopes or affections.
          [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Nurture \Nur"ture\, n. [OE. norture, noriture, OF. norriture,
   norreture, F. nourriture, fr. L. nutritura a nursing,
   suckling. See Nourish.]
   1. The act of nourishing or nursing; tender care; education;
      training.
      [1913 Webster]

            A man neither by nature nor by nurture wise.
                                                  --Milton.
      [1913 Webster]

   2. That which nourishes; food; diet. --Spenser.
      [1913 Webster]

WordNet (r) 3.0 (2006):

nurture
    n 1: the properties acquired as a consequence of the way you
         were treated as a child [syn: raising, rearing,
         nurture]
    2: helping someone grow up to be an accepted member of the
       community; "they debated whether nature or nurture was more
       important" [syn: breeding, bringing up, fostering,
       fosterage, nurture, raising, rearing, upbringing]
    v 1: help develop, help grow; "nurture his talents" [syn:
         foster, nurture]
    2: bring up; "raise a family"; "bring up children" [syn: rear,
       raise, bring up, nurture, parent]
    3: provide with nourishment; "We sustained ourselves on bread
       and water"; "This kind of food is not nourishing for young
       children" [syn: nourish, nurture, sustain]

Moby Thesaurus II by Grady Ward, 1.0:

214 Moby Thesaurus words for "nurture":
   TLC, abet, acculturate, advance, aid and abet, aliment,
   alimentation, ameliorate, amend, apprentice, apprenticeship,
   ask for, attend to, baby-sit, back, basic training, bear, better,
   bolster, boost, bosom, bread, break, break in, breaking,
   breast-feed, breed, breeding, bring forward, bring up, care,
   care for, chaperon, cherish, civilize, cling to, clip, coddle,
   comestibles, condition, conditioning, conserve, cosset,
   countenance, cradle, cultivate, cultivation, culture, daily bread,
   develop, development, discipline, drill, drilling, dry-nurse, eats,
   economic support, edibles, edify, educate, elevate, embosom,
   embrace, emend, encourage, endowment, enhance, enlighten, enrich,
   entertain, exercise, farm, fatten, fatten up, favor, feed,
   fetch up, fetching-up, fit, fondle, force-feed, form, forward,
   foster, fostering, give encouragement, go straight, groom,
   grooming, grow, grub, harbor, hatch, have, have and hold, hold,
   hold on to, house-train, housebreak, housebreaking, hug, improve,
   improve upon, improvement, in-service training, invite, keep,
   keep in countenance, keep watch over, lactate, lard,
   lavish care on, lick into shape, lift, livelihood, living,
   look after, look out for, look to, maintenance,
   make an improvement, manna, manual training, matronize, meat,
   meliorate, mend, military training, mind, minister to, mother,
   mothering, nourish, nourishment, nurse, nurturing, nutrify,
   nutriment, on-the-job training, pabulum, pamper, pap, practice,
   preparation, prepare, preserve, price support, promote, protege,
   provender, provide for, provision, provisions, put in tune,
   put to school, raise, raising, ranch, ready, readying, rear,
   rearing, refection, refine upon, reform, refreshment, rehearsal,
   rehearse, ride herd on, run, school, see after, see to,
   send to school, shepherd, sloyd, socialize, spoon-feed,
   straighten out, stuff, subsidization, subsidy, subsistence,
   subvention, suckle, support, sustain, sustainment, sustenance,
   sustentation, take care of, take charge of, take in hand, tend,
   tender loving care, train, training, transfigure, transform,
   treasure, treasure up, upbringing, upgrade, uphold, upkeep, uplift,
   viands, victuals, vocational education, vocational training, watch,
   watch out for, watch over, wet-nurse