dust
n. uncountable B1 Intermediate Oxford US //ˈdəst// UK //dˈʌst// dust
n. tiny pieces of dry dirt or waste that look like powder. You often see it on furniture or floating in the air when the sun shines through a window.
n. fine, dry particles of matter, such as earth or waste, that settle on surfaces or float in the atmosphere.
I need to wipe the dust off the bookshelf.
The old house was filled with dust after sitting empty for nearly a decade.
Sunlight filtered through the attic window, illuminating millions of tiny dust motes that danced in the stagnant air above the forgotten trunks.