Way somebody emptied trunk (6)
I believe the answer is:
system
'way' is the definition.
(I've seen this before)
'somebody emptied trunk' is the wordplay.
'emptied' suggests removing the centre.
'trunk' becomes 'stem' (I can't justify this - if you can you should give a lot more credence to this answer).
'somebody' with its centre taken out is 'sy'.
'sy'+'stem'='SYSTEM'
Can you help me to learn more?
(Other definitions for system that I've seen before include "Organised structure for arranging or classifying" , "Organised scheme" , "Plan of action" , "Organized scheme" , "Arrangement of things working together" .)