Gamut (5)
I believe the answer is:
range
'gamut' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for range that I've seen before include "Shooting area - group of mountains" , "Large, grassy land for livestock in the US" , "A set of different things of the same general type" , "Full choice of clothes" , "Place to practise driving" .)