Complete collection (3)
I believe the answer is:
set
'complete collection' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for set that I've seen before include "Place - become rigid - adjust - group of tennis games - fixed - clique - fall beneath the horizon" , "Mount (gem); scenery" , "Fix; lay" , "Become stiff like jelly" , "Determined or congealed" .)