Actor in next Rambo? (5)
I believe the answer is:
extra
'actor' is the definition.
(extra is a kind of actor)
'in next rambo?' is the wordplay.
'in' indicates a hidden word.
'EXTRA' can be found hidden inside 'next rambo'.
(Other definitions for extra that I've seen before include "more than usually" , "Sundry" , "Additional or supplementary" , "someone acting in a crowd" , "walk-on part" .)