Like stadiums (6)
I believe the answer is:
tiered
'like stadiums' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tiered that I've seen before include "Built in layers" , "Like some wedding cakes" , "Arranged in rising 5 ac" , "Constructed in layers, like wedding cake" , "Arranged in rows" .)