[1] : The Collaborative International Dictionary of English v.0.48

dust storm \dust" storm`\ du^st"st^orm`, 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
see also:
sandstorm 

[2] : WordNet (r) 2.0

sandstorm
     n : a windstorm that lifts up clouds of dust or sand; "it was
         the kind of duster not experienced in years" syn: dust
         storm, duster, sirocco
see also:
dust storm duster sirocco 

Sandstorm >> S Words
Sandstorm, definition of term: Sandstorm
sandstorm_pag1.html