Report heard at a certain level (6)
I believe the answer is:
storey
'level' is the definition.
(synonyms)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for storey that I've seen before include "rooms on one level" , "Tier of a building" , "Oyster (anag) -- level" , "Layer of house" , "part of the building" .)