Bare bones revealed rank (7)
I believe the answer is:
outline
'bare bones' is the definition.
'revealed rank' is the wordplay.
'revealed' becomes 'out' (I've seen this in other clues).
'rank' becomes 'line' (**).
'out'+'line'='OUTLINE'
(Other definitions for outline that I've seen before include "Sketch; general statement" , "Undetailed plan" , "General plan; summary" , "route" , "Possibly tracing" .)