cloud -- (any collection of particles (e.g., smoke or dust) or gases that is visible)
cloud -- (a visible mass of water or ice particles suspended at a considerable altitude)
cloud -- (out of touch with reality; "his head was in the clouds")
cloud -- (a cause of worry or gloom or trouble; "the only cloud on the horizon was the possibility of dissent by the French")
cloud -- (suspicion affecting your reputation; "after that mistake he was under a cloud")
swarm, cloud -- (a group of many things in the air or on the ground; "a swarm of insects obscured the light"; "clouds of blossoms"; "it discharged a cloud of spores")
Overview of verb cloud
The verb cloud has 8 senses
overcast, cloud -- (make overcast or cloudy; "Fall weather often overcasts our beaches")
obscure, befog, becloud, obnubilate, haze over, fog, cloud, mist -- (make less visible or unclear; "The stars are obscured by the clouds"; "the big elm tree obscures our view of the valley")
cloud -- (billow up in the form of a cloud; "The smoke clouded above the houses")
cloud -- (make gloomy or depressed; "Their faces were clouded with sadness")
defile, sully, corrupt, taint, cloud -- (place under suspicion or cast doubt upon; "sully someone's reputation")
cloud -- (make less clear; "the stroke clouded memories of her youth")
mottle, dapple, cloud -- (colour with streaks or blotches of different shades)
cloud -- (make milky or dull; "The chemical clouded the liquid to which it was added")