Tug-of-war cord (4)
I believe the answer is:
rope
'tug-of-war cord' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rope that I've seen before include "Strong line" , "Stout cord" , "Lash" , "making money easily when old?" , "Maybe tied up in bonds" .)