Wood that repels moths (5)
I believe the answer is:
cedar
'wood that repels moths' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cedar that I've seen before include "Tall conifer" , "Cypress-like tree" , "Great hardwood tree associated with Lebanon" , "Fragrant conifer" , "representative of Lebanon?" .)