The hoarder of Reims? (5)
I believe the answer is:
miser
'the hoarder' is the definition.
(I have seen 'Hoarder of money' mean 'miser' so perhaps 'hoarder' could also mean 'miser')
'of reims' is the wordplay.
'of' indicates anagramming the letters (the answer comes from or 'of' the letters).
'reims' with letters rearranged gives 'MISER'.
(Other definitions for miser that I've seen before include "One hoarding wealth" , "auger" , "hunks" , "Pinchpenny" , "One hoarding money" .)