Chambers occupied with circulating what lungs take in (5)
I believe the answer is:
atria
'chambers' is the definition.
(atrium is a kind of chamber)
'occupied with circulating what lungs take in' is the wordplay.
I cannot quite see how this works, but
'occupied' could be 'at' (being occupied or busy at something) and 'at' is present in the answer.
'take' could be 'r' (abbreviation for 'recipe', Latin for 'take') and 'r' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for atria that I've seen before include "Roofed central courts" , "Open-roofed entrance halls (Roman) - glass-roofed central halls (modern)" , "Public spaces with galleries" , "Open-roofed courts" , "Central courts (in ancient Rome or shopping arcades)" .)
