from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An outer or additional door added for protection against inclement weather.

from The Century Dictionary.

  • noun An outer or additional door for protection against inclement weather: in general used temporarily, for the winter only.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A door normally leading to a cellar or a basement, for protection from a tornado or a violent storm

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun an extra outer door for protection against severe weather or winter


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