redan

noun

re·​dan

rə̇ˈdan

plural -s

: a fortification having two parapets forming a salient angle, an unfortified entrance usually protected by its location (as on the bank of a stream, at the head of a bridge, or in advance of a strong line), and often a connection (as by curtains) with other such fortifications as a simple form of fieldwork

Word History

Etymology

French, alteration of redent, from re- + dent tooth, from Latin dent-, dens

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