Gifted boy in marquee with pressman (8)
I believe the answer is:
talented
'gifted' is the definition.
(I know that gifted can be written as talented)
'boy in marquee with pressman' is the wordplay.
'boy' becomes 'Al'.
'in' indicates putting letters inside.
'marquee' becomes 'tent' (marquee is a type of tent).
'with' says to put letters next to each other.
'pressman' becomes 'ed' (short for editor).
'al' placed into 'tent' is 'talent'.
'talent'+'ed'='TALENTED'
(Other definitions for talented that I've seen before include "Having a natural aptitude or skill" , "Possessing ability" , "Having special or great ability" , "Brilliant" , "Having natural or special ability" .)