Ridicule can get one in tears, possibly (6)
I believe the answer is:
satire
'ridicule' is the definition.
(I've seen this before)
'one in tears possibly' is the wordplay.
'one' becomes 'i' (Roman numeral).
'in' indicates putting letters inside.
'possibly' indicates anagramming the letters.
'tears' is an anagram of 'satre'.
'i' put within 'satre' is 'SATIRE'.
'can get' is the link.
(Other definitions for satire that I've seen before include "Pointed humour" , "text of Juvenal" , "Political humour" , "Caustic comments" , "Biting humour exposing vice, folly etc." .)