Wood arranged neatly (6)
I believe the answer is:
spruce
'wood' is the definition.
(spruce is a kind of wood)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for spruce that I've seen before include "Neat - evergreen" , "Smart in appearance like fir tree" , "thing for fairy to be on top of?" , "Smart and tidy - tree" , "One [TYPE OF TREE]" .)