Honour over in Kiel, Bonn, etc (7)
I believe the answer is:
ennoble
'honour' is the definition.
(I know that ennoble is a more specific form of honour)
'over in kiel bonn etc' is the wordplay.
'over' says the letters should be written backwards.
'in' says the answer is hidden in the clue.
'elbonne' is hidden within 'kiel bonn etc'.
'elbonne' in reverse letter order is 'ENNOBLE'.
(Other definitions for ennoble that I've seen before include "Elevate to peerage" , "Noel Ben (anag)" , "Raise to the knighthood or make more dignified" , "Give rank or title to (someone)" , "Bestow high rank upon" .)