Sandinista Geraldo shows leg (5)
I believe the answer is:
stage
'leg' is the definition.
(I know that leg can be written as stage)
'sandinista geraldo shows' is the wordplay.
'shows' indicates the answer is hidden within the clue.
'STAGE' is hidden in the letters of 'sandinista geraldo'.
(Other definitions for stage that I've seen before include "Present; part of journey" , "Performance place" , "The boards" , "Performers' platform" , "Leg; part of theatre" .)