stackage

from The Century Dictionary.

• noun Grain, hay, etc., put up in stacks.
• noun A tax on things stacked.

from the GNU version of the Collaborative International Dictionary of English.

• noun rare Hay, grain, or the like, in stacks; things stacked.
• noun rare A tax on things stacked.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Hay, grain, etc. in stacks; things stacked.
• noun A tax on things stacked.