cloud cover

: 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

: to guard from attack

: to have within the range of one's guns : command

: to hold within range of an aimed firearm

: something that protects, shelters, or guards: such as

: natural shelter for an animal

: a position or situation affording protection from enemy fire