Honey badger allowed a run back (5)
I believe the answer is:
ratel
'honey badger' is the definition.
(synonyms)
'allowed a run back' is the wordplay.
'allowed' becomes 'let' (to let is to allow or permit).
'a run' becomes 'ar' (I am not sure about this - if you are sure you should believe this answer much more).
'back' says the letters should be written backwards.
'let'+'ar'='letar'
'letar' backwards is 'RATEL'.
Can you help me to learn more?
(Other definitions for ratel that I've seen before include "creature with sweet tooth" , "Mammal's" , "Badger-like animal" , "Honey-badger" , "predator" .)