A reinforcing earthwork or breastwork within a permanent rampart.
A protected place of refuge or defense.
[French redoute, from Italian ridotto, from Medieval Latin reductus, concealed place, from Latin, past participle of redūcere, to withdraw, lead back; see reduce.]
Re·doubt (rē'dout') A volcano, 3,111 m (10,200 ft) high, of southern Alaska. The highest peak of the Aleutian Range, it erupted in 1989 for the first time in 25 years.