Ship's rope (7)
I believe the answer is:
lanyard
'ship's rope' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lanyard that I've seen before include "Cord worn around the neck by Boy Scout" , "Short rope used as a fastening" , "Rope on ship's rigging" , "Cord with whistle attached" , "Neck cord holding whistle" .)