Deity or nymph of the woods (5)
I believe the answer is:
dryad
I believe this clue is a double definition.
'deity' is the first definition.
(I know that dryad is a type of nymph)
'nymph of the woods' is the second definition.
(I've seen this in another clue)
(Other definitions for dryad that I've seen before include "Nymph of trees" , "Nymph of the woods" , "butterfly" , "minor divinity" , "one stuck in a tree" .)