Dust we drop all over the place (6)
I believe the answer is:
powder
'dust' is the definition.
(I've seen this before)
'we drop all over the place' is the wordplay.
'all over the place' indicates anagramming the letters.
'we'+'drop'='wedrop'
'wedrop' with letters rearranged gives 'POWDER'.
(Other definitions for powder that I've seen before include "Solid substance in tiny loose particles" , "A solid that has been pulverized" , "Fine, dry particles produced by the grinding, crushing" , "Beauty aid" , "secured by a magazine" .)