The weary walk of a policeman? (4)
I believe the answer is:
plod
This clue could be a double definition.
'the weary walk' is the first definition.
'plod' can be an answer for 'walk' (I've seen this before). I am not sure about the 'the weary' bit.
'policeman?' is the second definition.
(UK informal term for a police officer)
'of a' is the link.
Can you help me to learn more?
(Other definitions for plod that I've seen before include "bluebottle, say" , "Walk heavily and wearily" , "Work (or walk) laboriously" , "Slow heavy walk" , "Walk heavily, trudge" .)