Pull on ends of short rope around well (4)
I believe the answer is:
toke
'pull' is the definition.
(I know that toke is a type of pull)
'ends of short rope around well' is the wordplay.
'ends of' indicates one should take the final letters (I've seen 'ending' mean this).
'around' is an insertion indicator.
'well' becomes 'ok' (synonyms).
The last letters of 'short rope' are 'te'.
'te' enclosing 'ok' is 'TOKE'.
'on' acts as a link.
(Other definitions for toke that I've seen before include "Draw on a spliff" , "A drag" .)