A rock; boulder; a hill.
A visible mass of water droplets suspended in the air.
Any mass of dust, steam or smoke resembling such a mass.
Anything which makes things foggy or gloomy.
Anything unsubstantial.
A dark spot on a lighter material or background.
A group or swarm, especially suspended above the ground or flying.
An elliptical shape or symbol whose outline is a series of semicircles, supposed to resemble a cloud.
(with "the") The Internet, regarded as an abstract amorphous omnipresent space for processing and storage, the focus of cloud computing.
A negative or foreboding aspect of something positive: see every cloud has a silver lining or every silver lining has a cloud.
Crystal methamphetamine.
A large, loosely-knitted headscarf worn by women.
To become foggy or gloomy, or obscured from sight.
To overspread or hide with a cloud or clouds.
To make obscure.
To make less acute or perceptive.
To make gloomy or sullen.
To blacken; to sully; to stain; to tarnish (reputation or character).
To mark with, or darken in, veins or sports; to variegate with colors.
To become marked, darkened or variegated in this way.