Shortcoming (6)
'shortcoming' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for defect that I've seen before include "'Flaw, imperfection (6)'" , "To change sides dishonourably" , "Fault - default" , "Join opponents in a cause" , "go over to the other side" .)
'shortcoming' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for drawback that I've seen before include "Limitation, disadvantage" , "Catch" , "Disadvantage, problem" , "Hindrance - disadvantage" , "Fly in the ointment" .)