Even hours later, still surrounded by the fog of war, we are not sure of who set off the bombs or why.
As dusk approaches, a fog creeps up the slope of the mountain and swallows the sprawling city below—just like Pablo promised.
Propylene glycol has been used as the base for fog machine liquids and in nebulizers for decades.
"thick, obscuring mist," 1540s, probably from a Scandinavian source akin to Danish fog "spray, shower, snowdrift," Old Norse fok "snow flurry," fjuk "snow storm." Cf. also Old English fuht, Dutch vocht, German Feucht "moist." Figurative phrase in a fog "at a loss what to do" first recorded c.1600.
"long grass," c.1300, probably of Scandinavian origin, cf. Norwegian fogg "long grass in a moist hollow," Icelandic fuki "rotten sea grass." The connection to fog (n.1), via a notion of long grass growing in moist dells of northern Europe, is tempting but not proven. Watkins suggests derivation from PIE *pu- "to rot, decay."
1590s, from fog (n.1). Related: Fogged; fogging.
[origin unknown; probably a substitution for smoke in all senses]