Choir stand (5)
I believe the answer is:
riser
'choir stand' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for riser that I've seen before include "Upright piece in stairs" , "One who has stopped sleeping" , "He gets up" , "Vertical piece between treads of staircase" , "one of a number in flight" .)