Last shape for piece of wood (4)
I believe the answer is:
slat
'piece of wood' is the definition.
'slat' can be an answer for 'wood' (thesaurus). I am not certain of the 'piece of' bit.
'last shape' is the wordplay.
'shape' indicates anagramming the letters.
'last' with letters rearranged gives 'SLAT'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for slat that I've seen before include "Part of a Venetian blind" , "Thin strip" .)