SAP n.
A narrow ditch or trench made from the foremost parallel toward the glacis or covert way of a besieged place by digging under cover of gabions, etc. Sap fagot (Mil.), a fascine about three feet long, used in sapping, to close the crevices between the gabions before the parapet is made. -- Sap roller (Mil.), a large ga…
SOW n.
A kind of covered shed, formerly used by besiegers in filling up and passing the ditch of a besieged place, sapping and mining the wall, or the like. Craig. Sow bread. (Bot.) See Cyclamen. -- Sow bug, or Sowbug (Zoöl.), any one of numerous species of terrestrial Isopoda belonging to Oniscus, Porcellio, and allied gene…