Secure stage pirate’s prop? (3,3)
I believe the answer is:
peg leg
'pirate's prop?' is the definition.
(pirates are often shown with wooden legs)
'secure stage' is the wordplay.
'secure' becomes 'peg'.
'stage' becomes 'leg' (a leg is a stage of a competition).
'peg'+'leg'='PEG-LEG'
(Other definitions for peg leg that I've seen before include "that supported Ahab" , "Long John Silver, for instance" , "Eg. Long John Silver" , "Person with a wooden limb" , "Informally, an artificial lower limb" .)