Modelmaker's timber (3)
I believe the answer is:
elm
'timber' is the definition.
(I've seen this before)
'modelmaker's' is the wordplay.
'ELM' is hidden in amongst the letters.
But, I'm uncertain how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for elm that I've seen before include "Species of tree" , "Source of wood" , "Hard wood" , "Large tree" , "wood used in pelmets" .)