Black cat put in front grave (4)
I believe the answer is:
tomb
'grave' is the definition.
(synonyms)
'black cat put in front' is the wordplay.
'black' becomes 'b' (as in pencil classifications).
'cat put' becomes 'tom' (I can't explain this - if you can you should believe this answer much more).
'in front' means one lot of letters go next to another.
'b' after 'tom' is 'TOMB'.
Can you help me to learn more?
(Other definitions for tomb that I've seen before include "Burial-vault" , "Crypt or grave" , "Burial site" , "grave situation" , "Place for the burial of a corpse" .)