Love European river (4)
I believe the answer is:
nile
'river' is the definition.
(Nile is an example)
'love european' is the wordplay.
'love' becomes 'nil' (love and nil mean zero in cricket and football).
'european' becomes 'E' (abbreviation e.g. EU).
'nil'+'e'='NILE'
(Other definitions for nile that I've seen before include "River of eastern Africa" , "Current" , "Cleopatra's river" , "River that's Blue and White" , "River of Egypt" .)