Dodgy Hogmanay tree (8)
I believe the answer is:
mahogany
'tree' is the definition.
(I've seen this before)
'dodgy hogmanay' is the wordplay.
'dodgy' indicates an anagram.
'hogmanay' is an anagram of 'MAHOGANY'.
(Other definitions for mahogany that I've seen before include "Old Cornish drink" , "Tropical timber" , "Hogmanay? (anag)" , "Log" , "Reddish-brown wood" .)