A wooden face (6)
I believe the answer is:
veneer
'face' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for veneer that I've seen before include "Thin coating on the outside" , "Thin wood facade" , "Thin surfacing of wood" , "Thin covering on top, as of wood" , "Thin wooden facing" .)