dust

A construction worker told Reuters news agency he was pumping concrete into the building's lower floors outside when the building collapsed and ran away after seeing a large cloud of dust.

Orchid seeds are as small as dust and do not provide any nutrients for the young plant to grow.

Allergies occur when the immune system overreacts to triggers such as dust and pollution.

They are meant to collect the powdered tear gas chemicals, to keep the irritants from being tracked into the building on the soles of their shoes like dust.

Toss them on a parchment-lined sheet, drizzle with a bit of butter, and dust with cinnamon and a pinch of sea salt.