Bust of Romeo pinched by barbarian (6)
I believe the answer is:
breast
'bust' is the definition.
(I've seen this before)
'romeo pinched by barbarian' is the wordplay.
'romeo' becomes 'R' (phonetic alphabet: alpha, bravo, charlie etc.).
'pinched by' indicates putting letters inside (inserted letters get pinched or taken).
'barbarian' becomes 'beast' (I've seen this in another clue).
'r' inserted into 'beast' is 'BREAST'.
'of' acts as a link.
(Other definitions for breast that I've seen before include "Invalid's helper" , "face" , "White chicken meat" , "Poultry joint" , "joint for diners" .)