Go back over some ragged old things initially found in trunk (5)
I believe the answer is:
torso
'trunk' is the definition.
(both can mean a person's chest)
'go back over some ragged old things initially' is the wordplay.
'go back' shows that the letters should be reversed in order.
'initially' indicates taking the first letters.
The first letters of 'over some ragged old things' is 'osrot'.
'osrot' in reverse letter order is 'TORSO'.
'found in' is the link.
(Other definitions for torso that I've seen before include "Roost on trunk?" , "Body, minus its head and limbs" , "Piece of bronze" , "Roost (anag)" , "Roots (anag)" .)