Back final runner at Bow? (7)
I believe the answer is:
endorse
'back' is the definition.
(I know that back can be written as endorse)
'final runner at bow?' is the wordplay.
I cannot quite understand how this works, but
'final' could be 'end' (synonyms) and 'end' is present in the answer.
'runner' could be 'r' (abbreviation) and 'r' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for endorse that I've seen before include "Give backing to" , "Pass" , "Approve officially" , "Give one's approval to" , "Put penalty points on (a driving licence)" .)