[n] fine powdery material such as dry earth or pollen that can be blown about in the air; "the furniture was covered with dust"
[n] free microscopic particles of solid material; "astronomers say that the empty space between planets actually contains measurable amounts of dust"
[n] the remains of something that has been destroyed or broken up
[v] remove the dust from, as of furniture
[v] rub the dust over a surface so as to blur the outlines of a shape; "The artist dusted the charcoal drawing down to a faint image"
[v] distribute loosely; "He scattered gun powder under the wagon."
[v] cover with a light dusting of a substance; "dust the bread with flour"