Wiktionary
ravelins
n. (plural of ravelin English)
Usage examples of "ravelins".
There was no glacis to climb, no ravelins to flank, no embrasures to gout cannon-fire.
Opposite are high redoubts and ravelins that the Austrians have constructed for opposing the passage across, which the French ostentatiously set themselves to attempt by the large bridge, amid heavy cannonading.