[1] : The Collaborative International Dictionary of English v.0.48

niche \niche\ ni^ch, n. f., fr. it. nicchia, prop., a
   shell-like recess in a wall, fr. nicchio a shellfish, mussel,
   fr. l. mytilus.
   a cavity, hollow, or recess, generally within the thickness
   of a wall, for a statue, bust, or other erect ornament.
   hence, any similar position, literal or figurative.
   1913 webster

         images defended from the injuries of the weather by
         niches of stone wherein they are placed. --evelun.
   1913 webster

[2] : WordNet (r) 2.0

niche
     n 1: a position particularly well suited to the person who
          occupies it; "he found his niche in the academic world"
     2: a small concavity syn: recess, recession, corner
     3: an enclosure that is set back or indented syn: recess
     4: ecology the status of an organism within its environment
        and community affecting its survival as a species syn:
        ecological niche
see also:
recess recession corner ecological niche 

[3] : Moby Thesaurus II by Grady Ward, 1.0

46 moby thesaurus words for "niche":
   alcove, asylum, bay, bolt-hole, cache, carrel, concealment, corner,
   cove, cover, covert, coverture, cranny, cubby, cubbyhole, cubicle,
   dark corner, den, dugout, foxhole, funk hole, hideaway, hideout,
   hidey hole, hiding, hiding place, hole, hollow, inglenook, lair,
   nook, oriel, pitchhole, place, position, recess, recession, refuge,
   retreat, roomlet, sanctuary, secret place, slot, snuggery, stash,
   undercovert

Niche >> N Words
Niche, definition of term: Niche
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