German cherry centre (4)
I believe the answer is:
herr
'german' is the definition.
(German equivalent to Mr)
'cherry centre' is the wordplay.
'centre' indicates a hidden word (hidden in the middle of the letters).
'HERR' is hidden in the letters of 'cherry'.
(Other definitions for herr that I've seen before include "German man's title" , "A German gentleman" , "Form of address for German male" , "Dieter respectfully addressed" , "German form like Mr." .)