WordNet (r) 3.0 (2006):

retail store
    n 1: a place of business for retailing goods [syn: mercantile
         establishment, retail store, sales outlet, outlet]

Moby Thesaurus II by Grady Ward, 1.0:

31 Moby Thesaurus words for "retail store":
   boutique, chain store, co-op, concession, cooperative,
   countinghouse, country store, department store, dime store,
   discount house, discount store, emporium, establishment,
   five-and-ten, general store, house, magasin, mail-order house,
   market, mart, post, salon, shop, store, supermarket, trading post,
   variety shop, variety store, warehouse, wareroom,
   wholesale house