Roughly positioned underneath end of elephant's trunk (5)
I believe the answer is:
torso
'trunk' is the definition.
(both can mean a person's chest)
'roughly positioned underneath end of elephant's' is the wordplay.
'roughly' becomes 'or so' ('10 or so' can mean 'roughly 10').
'positioned underneath' is a charade indicator (letters next to each other).
'end of' suggests the final letters.
The final letter of 'elephant' is 't'.
'orso' after 't' is 'TORSO'.
(Other definitions for torso that I've seen before include "Roots (anag)" , "Roots out in trunk of the body" , "Body without head, neck and limbs" , "Poorly-dressed child" , "Trunk, something unfinished" .)