Hollowed out, nothing inside old red fruit (5)
I believe the answer is:
mango
'fruit' is the definition.
(mango is a kind of fruit)
'hollowed out nothing inside old red' is the wordplay.
'hollowed out' means to remove the middle letters.
'inside' indicates putting letters inside.
'old red' becomes 'Mao' (Chairman Mao Zedong - 'red' can mean a communist).
'nothing' with its centre removed is 'ng'.
'ng' going into 'mao' is 'MANGO'.
(Other definitions for mango that I've seen before include "Yellow-fleshed fruit" , "No, Mag has the odd fruit" , "product" , "fruit-tree" , "Tropical fruit, its pickle" .)