upper storey
A person's brain.
I think there's something the matter with his upper storey!
ADJ
lower | top, upper
VERB + STOREY
have
The apartment building has five storeys and an underground car park.
occupy
The company's offices occupy the entire top storey of the building.
PREP
on a/the ~
The office has a café on the second storey where employees can take their lunch break.
PHRASES
5/10, etc. storeys high
My grandmother's apartment is on the tenth storey high in the city centre.