Stop lines repeated in song (7)
I believe the answer is:
refrain
This clue might be a double definition.
'stop lines' is the first definition.
'refrain' can be an answer for 'stop' (I've seen this before). I am unsure of the 'lines' bit.
'repeated in song' is the second definition.
'refrain' can be an answer for 'song' (thesaurus). I'm not certain of the 'repeated in' bit.
Can you help me to learn more?
(Other definitions for refrain that I've seen before include "Stop - chorus" , "Stop oneself (from doing something)" , "Lines repeated at the end of each verse" , "Chorus; keep away (from)" , "Kindly desist - from song?" .)