Braces made of tree trunks (6)
I believe the answer is:
cabers
'tree trunks' is the definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Perhaps they are linked in a way I don't understand?
'braces made' is the wordplay.
'made' indicates anagramming the letters.
'braces' with letters rearranged gives 'CABERS'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for cabers that I've seen before include "Poles" , "They're tossed in Scotland" .)