The Collaborative International Dictionary of English v.0.48:

Storekeeper \Store"keep`er\, n.
   1. A man in charge of stores or goods of any kind; as, a
      naval storekeeper.
      [1913 Webster]

   2. One who keeps a "store;" a shopkeeper. See 1st Store, 3.
      [U. S.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

storekeeper
    n 1: a merchant who owns or manages a shop [syn: shopkeeper,
         tradesman, storekeeper, market keeper]

Moby Thesaurus II by Grady Ward, 1.0:

37 Moby Thesaurus words for "storekeeper":
   caterer, chandler, commissariat, commissary, dealer, distributor,
   donor, furnisher, importer, jobber, manciple, marketer,
   merchandiser, merchant, middleman, monger, patron, provider,
   provisioner, purveyor, quartermaster, regrater, retail dealer,
   retail merchant, retailer, shopkeeper, steward, stock clerk,
   supplier, sutler, trader, tradesman, tradeswoman, trafficker,
   victualer, vivandier, wholesaler