Dig up a dead body (6)
(Other definitions for exhume that I've seen before include "Dig up (a corpse)" , "Reveal" , "Dig up (a body)" , "opposite of 5 [ENTOMB]" , "Disinter a dead body" .)
'dig up a dead body' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for disinter that I've seen before include "Unearth" , "Dig up, say a body" , "Bring up" , "Exhume a body" , "Dig up a dead body" .)