H4013
מבצרה מבצר
מִבצָּר מִבצָּרָה ‎ mibtsâr mibtsârâh
mib-tsawr‘, mib-tsaw-raw‘
From 1219 a fortification, castle, or fortified city; figuratively a defender: - (de-, most) fenced, fortress, (most) strong (hold).