Brumaire
From BiblePortal Wikipedia
Webster's Dictionary [1]
(n.) The second month of the calendar adopted by the first French republic. It began thirty days after the autumnal equinox. See Vendemiaire.
The Nuttall Encyclopedia [2]
The 18th ( i. e . the 9th November 1799, the foggy month), the day when Napoleon, on his return from Egypt, overthrew the Directory and established himself in power.