Part in epic shot by European (5)
I believe the answer is:
piece
'part' is the definition.
(piece is a kind of part)
'epic shot by european' is the wordplay.
'shot' indicates anagramming the letters.
'by' means one lot of letters go next to another.
'european' becomes 'e' (abbreviation e.g. EU).
'epic' anagrammed gives 'piec'.
'piec'+'e'='PIECE'
'in' is the link.
(Other definitions for piece that I've seen before include "Portion, coin, item" , "Portion; musical work" , "one of eight once ready for the Spanish?" , "Separate part of a whole" , "Castle, perhaps" .)