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

cellar \cel"lar\, n. oe. celer, of. celier, f. celier, fr. l.
   cellarium a receptacle for food, pantry, fr. cella storeroom.
   see cell.
   a room or rooms under a building, and usually below the
   surface of the ground, where provisions and other stores are
   kept.
   1913 webster
see also:
cell 

[2] : WordNet (r) 2.0

cellar
     n 1: the lowermost portion of a structure partly or wholly below
          ground level; often used for storage syn: basement
     2: an excavation where root vegetables are stored syn: root
        cellar
     3: storage space where wines are stored syn: wine cellar
see also:
basement root cellar wine cellar 

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

66 moby thesaurus words for "cellar":
   archives, armory, arsenal, attic, bank, basement, bay, bin,
   bonded warehouse, bookcase, box, bunker, buttery, cargo dock,
   cellarage, chest, closet, coal bin, conservatory, crate, crib,
   cupboard, cyclone cellar, depository, depot, dock, drawer, dump,
   exchequer, glory hole, godown, hold, hole, hutch, library, locker,
   lumber room, lumberyard, magasin, magazine, potato cellar, rack,
   repertory, repository, reservoir, rick, shelf, stack, stack room,
   stock room, storage, store, storehouse, storeroom, storm cellar,
   subbasement, supply base, supply depot, tank, treasure house,
   treasure room, treasury, vat, vault, warehouse, wine cellar

[4] : Easton's 1897 Bible Dictionary

cellar
   a subterranean vault 1 chr. 27:28, a storehouse. the word is
   also used to denote the treasury of the temple 1 kings 7:51
   and of the king 14:26. the hebrew word is rendered "garner" in
   joel 1:17, and "armoury" in jer. 50:25.
   

Cellar >> C Words
Cellar, definition of term: Cellar
cellar_pag1.html

Root Cellar >> R Words
Root Cellar, definition of term: Root Cellar
root+cellar_pag1.html