Spread out uniform (4)
I believe the answer is:
flat
I believe this is a double definition.
'spread out' is the first definition.
(thesaurus)
'uniform' is the second definition.
(I've seen this in other clues)
(Other definitions for flat that I've seen before include "Uninteresting - piece of scenery" , "Level - uninteresting - accommodation" , "Like a pancake?" , "rooms exactly" , "Apartment - on the level" .)