Get rope twisted by pupil (7)
I believe the answer is:
protege
'pupil' is the definition.
(I've seen this before)
'get rope twisted' is the wordplay.
'twisted' is an anagram indicator.
'get'+'rope'='getrope'
'getrope' with letters rearranged gives 'PROTEGE'.
'by' acts as a link.
(Other definitions for protege that I've seen before include "Favoured pupil" , "Pupil; ward" , "One guided and protected by another" , "One supported by a person of greater experience" , "Someone supported by an influential patron" .)