Figure of lost bird circling cage around noon (9)
I believe the answer is:
dodecagon
'figure' is the definition.
(dodecagon is a kind of figure)
'lost bird circling cage around noon' is the wordplay.
'lost bird' becomes 'dodo' (dodo is a kind of bird. I am not sure about the 'lost' bit.).
'circling' indicates putting letters inside (circling can mean going around or containing).
'around' is an anagram indicator.
'noon' becomes 'n'.
'cage' with letters rearranged gives 'ecag'.
'dodo' enclosing 'ecag' is 'dodecago'.
'dodecago'+'n'='DODECAGON'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for dodecagon that I've seen before include "Twelve-sided figure" , "Piece of geometry" , "Multilateral arrangement" .)