Sap roller


  • Webster's Revised Unabridged Dictionary
    • Sap roller (Mil) a large gabion, six or seven feet long, filled with fascines, which the sapper sometimes rolls along before him for protection from the fire of an enemy.
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In literature:

However, in order to push forward the siege-works, sap-rollers had to be brought into use.
"The Franco-German War of 1870-71" by Count Helmuth, von Moltke
At the mill the canes are run between heavy rollers, which squeeze out the sap.
"How We are Fed" by James Franklin Chamberlain