Trunk for the end of August or thereabouts (5)
I believe the answer is:
torso
'trunk' is the definition.
(both can mean a person's chest)
'end of august or thereabouts' is the wordplay.
'end of' suggests the final letters.
'thereabouts' becomes 'so' (I can't justify this - if you can you should believe this answer much more).
The last letter of 'august' is 't'.
't'+'or'+'so'='TORSO'
'for the' is the link.
Can you help me to learn more?
(Other definitions for torso that I've seen before include "Roost (anag)" , "Body, minus its head and limbs" , "upper body" , "Chest" , "unfinished work" .)