Drag through most of settlement (3)
I believe the answer is:
tow
'drag' is the definition.
(I know that tow is a more specific form of pull along)
'most of settlement' is the wordplay.
'most of' means to remove the last letter.
'settlement' becomes 'town'.
'town' with its last letter taken away is 'TOW'.
'through' acts as a link.
(Other definitions for tow that I've seen before include "Draw" , "Prepared fibres" , "form of flax" , "Tug" , "Pull along behind, say barge" .)