Senses
落尘/ 落塵 atmospheric dust fall
fine particles that naturally settle on the ground from the atmosphere
落尘/ 落塵 to fall to earth
(literary) to fall into the mortal realm
落尘/ 落塵 radioactive fallout
radioactive particles that fall to the ground after a nuclear explosion, often causing severe radiation pollution
落尘/ 落塵 particulate fallout
dust fall resulting from volcanic eruptions or industrial pollution