Wood strip
I believe the answer is:
lath
'wood strip' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lath that I've seen before include "Thin wood strip supporting plaster" , "Narrow thin strip of wood" , "Strip of wood used as a base for plastering" , "Narrow strip of wood used as backing for plasterwork" , "Thin strip of wood used in plastering" .)