Word familyadjectiveredoubtableredoubtedadverbredoubtablynounredoubt
re·doubt /rɪˈdaʊt/ noun [countableC] formal
a small hidden place, for example where soldiers hide themselves when they are fighting 藏身之所;堡垒
Examples from the Corpus
redoubt• Well-concealed redoubts were guarded by a triple barrier of barbed wire, fifty yards deep.• Enemy redoubts were strewn with booby traps as a matter of course.• The redoubt of the Seven Pines is surrounded, and its defenders die bravely..