A subterranean vault (1 Chronicles 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 Jeremiah 50:25.

Noah Webster's New International Dictionary of the English Language

(n.) A room or rooms under a building, and usually below the surface of the ground, where provisions and other stores are kept.