A building for keeping goods of any kind, especially provisions.
(obsolete)
Jacobsen's theory about the empty storehouse is still valid, for a myth never has one meaning only; a myth is a polyphonic fugue of many voices.1981, William Irwin Thompson, The Time Falling Bodies Take to Light: Mythology, Sexuality and the Origins of Culture, London: Rider/Hutchinson & Co., page 175:
2
Broadly, Figuratively A single location or resource where a large quantity of something can be found.
This old book is a genuine storehouse of useful cooking tips.
Three days passed. Carrados was not unendurably bored, for his mind was an inexhaustible storehouse […]1927, Ernest Bramah [pseudonym; Ernest Brammah Smith], Max Carrados Mysteries:
1 more example
To most people, the huge ice sheets of Antarctica and Greenland are merely water that once was snow. To glaciologists and climatologists, they are storehouses of the Earth's former atmospheres.1988 April 14, Richard Fifield, “Frozen assets of the ice cores”, in New Scientist, number 1608, page 28:
enrich the storehouse of his powerfull wit1591, Ed[mund] Sp[enser], Complaints. Containing Sundrie Small Poemes of the Worlds Vanitie. […], London: […] William Ponsonbie, […], →OCLC: