Scholarly postman? (3,2,7)
I believe the answer is:
man of letters
'postman?' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for man of letters that I've seen before include "from academia?" , "Writer, scholar" , "chap in epistolatory relations" , "Lexicographer < is a scholar" , "postie?" .)