matsowr (Hebrew #4692)
from 6696; something hemming in, i.e. (objectively) a mound (of besiegers), (abstractly) a siege, (figuratively) distress; or (subjectively) a fastness
KJV usage: besieged, bulwark, defence, fenced, fortress, siege, strong (hold), tower.
Pronounce: maw-tsore'
Origin: or matsuwr {maw-tsoor'}