Stole case of redwood timber (5)
I believe the answer is:
board
'timber' is the definition.
(I know that board is a type of timber)
'stole case of redwood' is the wordplay.
'stole' becomes 'boa' (both can mean a type of scarf).
'case of' means to remove the middle letters (like emptying a case).
'redwood' with its centre removed is 'rd'.
'boa'+'rd'='BOARD'
(Other definitions for board that I've seen before include "panel" , "Get on - governing body" , "Decision-making body" , "Go onto (a ship)" , "Get on (ship)" .)