Webster contrived to scatter over (7)
I believe the answer is:
bestrew
'scatter over' is the definition.
(I've seen this in another clue)
'webster contrived' is the wordplay.
'contrived' indicates anagramming the letters.
'webster' with letters rearranged gives 'BESTREW'.
'to' is the link.
(Other definitions for bestrew that I've seen before include "broadcast?" , "Cover with" , "Scatter around as by Webster" , "Lie scattered over (a surface) (literary)" , "Distribute" .)