Badly cared for timber (5)
I believe the answer is:
cedar
'timber' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'badly cared' is the wordplay.
'badly' indicates anagramming the letters (letters in the wrong order).
'cared' is an anagram of 'CEDAR'.
'for' is the link.
Can you help me to learn more?
(Other definitions for cedar that I've seen before include "Tree giving fragrant wood" , "Raced around a great hardwood tree" , "Raced around a mighty tree" , "Tall conifer" , "Evergreen tree" .)