Tradesman bursts into tears (9)
I believe the answer is:
'tradesman' is the definition.
(I've seen this before)
'bursts into tears' is the wordplay.
'bursts' indicates an anagram.
'intotears' is an anagram of 'STATIONER'.
(Other definitions for stationer that I've seen before include "Writing-materials shop" , "bookseller" , "I supply rulers: for example" , "Retailer of writing materials etc" , "has what writer needs" .)