Job detail, for short (4)
I believe the answer is:
spec
'job detail for short' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for spec that I've seen before include "Detailed design document (abbr.)" , "Description of requirements" , "Minor description of detail" , "on which one takes a gamble" , "Awkward, clumsy" .)