Swinging round part of mansion (4)
I believe the answer is:
wing
This clue might be a double definition.
'swinging round' is the first definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'part of mansion' is the second definition.
(a wing is one side of a large building)
Can you help me to learn more?
(Other definitions for wing that I've seen before include "Feathered limb used in flying" , "Aircraft lift provider" , "Footballer" , "Part of flier" , "Projecting part of bird or aircraft" .)