rempart

Old French remparer meant to fortify, to take possession of a defensive position. It combines re- (again, back) with emparer (to seize, to make ready), which traces to Vulgar Latin *imparāre, from Latin in- + parāre (to prepare). A rempart was the thing you prepared — the broad-topped defensive wall that protected a fortification. The wall was thick enough to walk on, wide enough to mount cannons on, and built to absorb the impact of siege weapons.

Medieval European warfare ran on ramparts. The crusader castles of the Levant — Krak des Chevaliers, rebuilt by the Knights Hospitaller between 1142 and 1271 — featured some of the most sophisticated rampart engineering in history. Vauban, Louis XIV's military architect, perfected the star-shaped fortress in the late 1600s, where angled ramparts eliminated blind spots and forced attackers into killing zones.

Francis Scott Key watched the British bombardment of Fort McHenry in Baltimore Harbor on the night of September 13, 1814. When dawn came and the American flag was still flying, Key wrote the poem that became "The Star-Spangled Banner." The line "O'er the ramparts we watched" referred to the fort's earthen walls — the elevated defensive embankments from which the garrison had observed the incoming fire. Key was being literal. The ramparts were where you stood to see whether you had survived.

The word has faded from everyday use because ramparts themselves are obsolete. Modern warfare does not defend fixed walls. But the word persists in anthems, in city names (the Ramblas of Barcelona traces to a similar Arabic root for sand embankment), and in metaphor. Political rhetoric still speaks of defending the ramparts of democracy, of freedom, of civilization — imagining walls that no longer exist to protect ideas that have no walls.