Thus get bishop to cry (3)
I believe the answer is:
sob
'to cry' is the definition.
(I know that sob is a more specific form of cry)
'thus get bishop' is the wordplay.
'thus' becomes 'so' (synonyms).
'get' says to put letters next to each other.
'bishop' becomes 'B' (abbreviation for bishop in chess).
'so'+'b'='SOB'
(Other definitions for sob that I've seen before include "Weep noisily" , "Cry convulsively" , "Weeping gasp" , "Cry uncontrollably" , "Cry loudly" .)