Record piece of wood (3)
I believe the answer is:
log
I believe this clue is a double definition.
'record' is the first definition.
(I know that log is a more specific form of the action record)
'piece of wood' is the second definition.
(Other definitions for log that I've seen before include "Listing" , "number in mathematical table" , "Piece of wood for the fire" , "Official record; cut part of tree trunk" , "Sea captain's diary of voyage" .)