Definition of "redoubt" [re•doubt]

• A small, often temporary defensive fortification. (noun)
• A reinforcing earthwork or breastwork within a permanent rampart. (noun)
• A protected place of refuge or defense. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Its last redoubt is National Public Radio, which by firing Juan Williams has made itself look more like the Radio Moscow of a half century ago than the CBS."
• "Only half-joking, he dubbed his redoubt “Castle Defiance.”"
• "General Izard named the principal work _Fort Moreau_, and to remind the troops of the actions of their brave countrymen, I called the redoubt on the right _Fort Brown_, and that on the left _Fort Scott_."