Cue is raised and brown finally pocketed by girl (6)
I believe the answer is:
signal
'cue' is the definition.
(I've seen this in another clue)
'is raised and brown finally pocketed by girl' is the wordplay.
'raised' is a reversal indicator (going up in a down clue).
'and' is a charade indicator (letters next to each other).
'finally' says to take the final letters.
'pocketed by' indicates putting letters inside.
'girl' becomes 'gal' ().
The final letter of 'brown' is 'n'.
'is' backwards is 'si'.
'n' inserted inside 'gal' is 'gnal'.
'si'+'gnal'='SIGNAL'
(Other definitions for signal that I've seen before include "Gesture; notable" , "Communication with encoded message" , "Important; cue" , "Gesture to convey information" , "important to train drivers > striking" .)