noun / verb
cloud
KLOWD/klaʊd/
A visible mass of suspended droplets or particles.
White clouds drift across the blue sky this morning.

Etymology
Old English clūd meant a rock mass or hill. Its meaning shifted skyward because the piled-up shapes of cumulus clouds resembled masses of rock.
In context
When this happens high up in the sky, all those little droplets form what we call a cloud.
More examples
- A cloud of smoke rises from the chimney.
- The passing truck leaves a cloud of dust behind.
- Dust clouds the air behind the tractor.
Forms
cloud · clouds · clouded · clouding
cloudy adjective — Covered with clouds or looking hazy.