Thick bits of small rooms (5)
I believe the answer is:
slabs
This clue could be a double definition.
'thick bits' is the first definition.
The definition and answer can be both man-made objects as well as being plural nouns.
Perhaps there's a link between them I don't understand?
'small rooms' is the second definition.
The definition and answer can be both man-made objects as well as being plural nouns.
Maybe they are linked in a way I don't understand?
'of' acts as a link.
Can you help me to learn more?
(Other definitions for slabs that I've seen before include "party on board" , "Pack of beer cans" , "Packs of cans of beer" .)