
1) Revolutionary calendar month
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https://www.crosswordclues.com/clue/frimaire

Frimaire (fʁimɛʁ) was the third month in the French Republican Calendar. The month was named after the French word frimas, which means frost. Frimaire was the third month of the autumn quarter (mois d`automne). It started between November 21 and November 23. It ended between December 20 and December 22. It follows the Brumaire and precedes the....
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http://en.wikipedia.org/wiki/Frimaire

• (n.) The third month of the French republican calendar. It commenced November 21, and ended December 20., See Vendemiaire.
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http://thinkexist.com/dictionary/meaning/frimaire/
Fri'maire` noun [ French, from
frimas hoarfrost.] The third month of the French republican calendar. It commenced November 21, and ended December 20., See
Vendémiaire .
Found on
http://www.encyclo.co.uk/webster/F/77

Frimaire was the third month of the French republican calendar, dating from September the 22nd, 1792. It commenced on November the 21st, and ended on December the 20th.
Found on
http://www.probertencyclopaedia.com/browse/AF.HTM

[
n] - third month of the Revolutionary calendar (November and December)
Found on
http://www.webdictionary.co.uk/definition.php?query=Frimaire

(in the French Revolutionary calendar) the third month of the year, extending from November 21 to December 20.
Found on
https://www.infoplease.com/dictionary/frimaire
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