National tree of Lebanon (5)

I believe the answer is:

cedar

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'tree of lebanon' is the definition.
(I've seen this in another clue)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for cedar that I've seen before include "Raced around noble tree" , "Leaving body" , "Cypress-like tree" , "Tree (Lebanese?)" , "Raced around a great hardwood tree" .)

I've seen this clue in The Times.

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