מָצוֹר mâtsôwr (H4692)

something hemming in, i.e. (objectively) a mound (of besiegers), (abstractly) a siege, (figuratively) distress; or (subjectively) a fastness

1) siege-enclosure, siege, entrenchment, siege works 1a) siege 1b) enclosure, siege-works, rampart

or מָצוּר; from צוּר (H6696);