redoubt
/rɪˈdaʊt/noun
- Military a temporary or supplementary fortification, typically square or polygonal and without flanking defences【军】棱堡, 多面堡; 堡垒。
词源
early 17th cent.: from French redoute, from obsolete Italian ridotta and medieval Latin reductus 'refuge', from Latin reducere 'withdraw'. The -b- was added by association with DOUBT.