redoubt
noun
[ rɪˈdaʊt ]
• a temporary or supplementary fortification, typically square or polygonal and without flanking defences.
• "the British stormed the rebel redoubt"
Origin:
early 17th century: from French redoute, from obsolete Italian ridotta and medieval Latin reductus ‘refuge’, from Latin reducere ‘withdraw’. The -b- was added by association with doubt.
