Wooden objects, number round about (5)
I believe the answer is:
treen
'wooden objects' is the definition.
(I've seen this before)
'number round about' is the wordplay.
'number' becomes 'ten' (ten is a kind of number).
'round' is an insertion indicator.
'about' becomes 're' (regarding**).
'ten' enclosing 're' is 'TREEN'.
(Other definitions for treen that I've seen before include "of wood" , "Woodenware" , "wooden items" , "box, say" , "Wooden ware" .)