Badge old Knut has back to front? (7)
I believe the answer is:
rosette
'badge' is the definition.
(rosette is a kind of badge)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for rosette that I've seen before include "shape for diamonds" , "sign of support for party" , "Badge of office or honour" , "collection of ribbons" , "Ribbon in a cluster as an award" .)