a thick large and persistent mass of water vapor and air pollution forming in the atmosphere; an instance of such clouds forming; also called Asian brown cloud
A mix of ozone, smoke, and other human-created particles can create a brown cloud.
She threw a laughing glance over her shoulder at him, and the wind caught her hair and drew it out in a brown cloud under the sun.
With a muffled roar, the grenade shook the earth; sent a brown cloud spattering around us.
That brown cloud hid a huge ants nest teeming with three millions of people.
It rains incessantly, and that hot hole in which we lie is one brown cloud of mosquitoes.
A vast column of smoke rising spread like a brown cloud, pierced here and there by fantastic shafts of sunlight.
When the splendid sacrificial robe was displayed a brown cloud of moths escaped from its folds.
She shook down her hair, and it fell about her in a brown cloud, hiding her face and shoulders.