redoubt ( b silent), redout, reduct, reduit

Ital. ridotto = a withdrawing-place, from ridotto, ridutto, pa. par. of ridurre (Lat. reduco ) = to bring back; Fr. réduit, redoute. The spelling redoubt is due to confusion with O. Fr. redoubter = to dread. Sp. reducto; Port. reducto, reduto, re douto.] [REDOUBTABLE.] Fortification : 1. A detached field-work inclosed by a parapet, the salient points of which are but imperfectly or not at all protected by a flank fire. It may be square, star-shaped, or irregular in plan, according to the requirements of its site and surroundings. "Being greatly incommoded in their approach by two redoubts."-Belsham: Hist. Great Brit. (an. 1781). 2. An interior work within the main line of ramparts. [RAVELIN.]