redoubt

re·doubt  (r-dout)

n.

1. A small, often temporary defensive fortification.

2. A reinforcing earthwork or breastwork within a permanent rampart.

3. A protected place of refuge or defense.

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[French redoute, from Italian ridotto, from Medieval Latin reductus, concealed place, from Latin, past participle of redcere, to withdraw, lead back; see reduce.]

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redoubt

Noun

1. a small fort defending a hill top or pass

2. a stronghold [French redoute]

Thesaurus

Noun	1.	redoubt - (military) a temporary or supplementary fortification; typically square or polygonal without flanking defenses fortification, munition - defensive structure consisting of walls or mounds built around a stronghold to strengthen it armed forces, armed services, military, military machine, war machine - the military forces of a nation; "their military is the largest in the region"; "the military machine is the same one we faced in 1991 but now it is weaker"
	2.	redoubt - an entrenched stronghold or refuge stronghold, fastness - a strongly fortified defensive structure