storm cloud

: a disturbance of the atmosphere marked by wind and usually by rain, snow, hail, sleet, or thunder and lightning

: a heavy fall of rain, snow, or hail

: wind having a speed of 64 to 72 miles (103 to 117 kilometers) per hour

: to blow with violence

: to rain, hail, snow, or sleet vigorously

: to attack by storm

: a visible mass of particles of condensed vapor (such as water or ice) suspended in the atmosphere of a planet (such as the earth) or moon

: something resembling or suggesting a cloud: such as

: a light filmy, puffy, or billowy mass seeming to float in the air

: to grow cloudy

: to become troubled, apprehensive, or distressed in appearance

: to become blurry, dubious, or ominous