noun
plural frosts
[noncount] :a thin layer of ice that forms on the ground, on grass, etc., when the air becomes cold
[count] :the occurrence of weather that is cold enough to cause water to freeze and frost to form
verb
frosts; frosted; frosting
[+ obj] :to cover (something) with frost
[no obj] :to become covered with frost
[+ obj] chiefly US :to cover (something, such as a cake) with frosting (sense 1)
[+ obj] chiefly US :to make small strips of your hair lighter so the top layer of your hair is lighter than the rest of it