Dust meaning : Fine particles The act of cleaning by dusting. The earth, as the resting place of the dead. The earthy remains of bodies once alive; the remains of the human body. Something worthless. A low or mean condition. Cash; money (in reference to gold dust). A disturbance or uproar. A totally disconnected set of points with a fractal structure. To remove dust from. To remove dust; to clean by removing dust. Of a bird, to cover itself in sand or dry, dusty earth. To spray or cover something with fine powder or liquid. To leave; to rush off. To reduce to a fine powder; to levigate. To kill or severely disable.