Victory in southern cavities (5)
I believe the answer is:
veins
'cavities' is the definition.
The definition and answer can be both body parts as well as being plural nouns.
Perhaps there's a link between them I don't understand?
'victory in southern' is the wordplay.
'victory' becomes 'VE' (VE is short for Victory in Europe).
'southern' becomes 's' (abbreviation).
've'+'in'+'s'='VEINS'
Can you help me to learn more?
(Other definitions for veins that I've seen before include "Layers of ore" , "Characteristic styles" , "Blood vessels" , "Circulation aids" .)