### Clue: One of life's professions that is covered by a postman? (4)
### Answer: WALK 
 ### Explanation: Definition: One of life's professions,that is covered by a postman
 Double defn: 1st: A line of work or profession, as in "People from different walks of life took part in the protest – tinkers, tailors, soldiers …. "; and 2nd: The round followed by a postman, from when postmen used to go on foot.