'dust storm' definitions:

Definition of 'dust storm'

From: WordNet
noun
A windstorm that lifts up clouds of dust or sand; "it was the kind of duster not experienced in years" [syn: dust storm, duster, sandstorm, sirocco]

Definition of 'dust storm'

From: GCIDE
  • dust storm \dust" storm`\ (d[u^]st"st[^o]rm`), n. A strong windstorm that lifts particles of dust or dry soil into the air and blows them around, covering land or objects with a thick layer of dust. Dust storms may occur in arable areas during periods of drought; when a similar storm occurs in a desert area, such a storm is called a sandstorm. [PJC]