Climb area, arranged in two chambers (9)
I believe the answer is:
bicameral
'two chambers' is the definition.
The answer and definition are not the same part of speech. However, I know that 'two chambers' relates to this answer.
'climb area arranged' is the wordplay.
'arranged' indicates anagramming the letters (letters rearranged).
'climb'+'area'='climbarea'
'climbarea' anagrammed gives 'BICAMERAL'.
'in' is the link.
Can you help me to learn more?
(Other definitions for bicameral that I've seen before include "Like our parliament" , "using two houses" .)