Other forms: brumes
A brume is a thick mist or fog. Plans for an autumn hike to see the colorful leaves may be thwarted if a brume rolls in, obscuring the view.
The word brume is often used in poetic or literary contexts. It is borrowed from French, where it has the same meaning of "fog or mist," but its Latin root, bruma, means "winter." The connection between winter and fog makes sense, as brumes are most common in winter, or as winter approaches, especially in coastal areas, river valleys, and low-lying regions. As colder, wintry air moves in, it sinks and condenses, creating a thick fog.