cast a (dark) cloud

:  to cause to move or send forth by throwing

:  direct

:  to put forth

:  an act of casting

:  something that happens as a result of chance

:  a throw of dice

:  devoid or partially devoid of light :  not receiving, reflecting, transmitting, or radiating light

:  transmitting only a portion of light

:  wholly or partially black

:  a place or time of little or no light :  night, nightfall

:  absence of light :  darkness

:  a color of low or very low lightness :  a dark or deep color

:  to grow dark (see ¹dark)

:  to make dark

:  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 billow up in the form of a cloud