The Collaborative International Dictionary of English v.0.48:

Storehouse \Store"house`\, n.
   1. A building for keeping goods of any kind, especially
      provisions; a magazine; a repository; a warehouse.
      [1913 Webster]

            Joseph opened all the storehouses, and sold unto
            Egyptians.                            --Gen. xli.
                                                  56.
      [1913 Webster]

            The Scripture of God is a storehouse abounding with
            estimable treasures of wisdom and knowledge.
                                                  --Hooker.
      [1913 Webster]

   2. A mass or quality laid up. [Obs.] --Spenser.
      [1913 Webster]

WordNet (r) 3.0 (2006):

storehouse
    n 1: a depository for goods; "storehouses were built close to
         the docks" [syn: storehouse, depot, entrepot,
         storage, store]