'Frimaire' definitions:

Definition of 'Frimaire'

From: WordNet
noun
Third month of the Revolutionary calendar (November and December); the frosty month

Definition of 'Frimaire'

From: GCIDE
  • Frimaire \Fri"maire`\, n. [F., fr. frimas hoarfrost.] The third month of the French republican calendar. It commenced November 21, and ended December 20., See Vend['e]miaire. [1913 Webster]