things that happened long time ago; memory from the past

Vacuum cleaning; breathing in polluted / dusty air

hoover

mortal world

mundane affairs; worldy (material values or ordinary life rather than spiritual existence)

dust and small particles floating in the air

noun; dust, grime

dust

When the dust settles

high-spirit

noun; dust

it means one's clothes are broken, damaged, that one is not presentable

to put away unused

bite the dust

not to have a single penny left

too far behind to catch up

sand and dust

to describe someone who is arrogant / pompous / grandiose

boastful; exaggerate; limelight (slang)

dust

welcome dinner for a friend or relative from overseas (spoken)

dust

mortal world

radiation dust

someone who works for night clubs, such as a prostitute or a nightclub hostess

a prostitute [written and colloquial]

to be exposed to dust; to lag behind