### Clue: Trim Christmas tree, perhaps (6)
### Answer: SPRUCE 
 ### Explanation: Definition: Trim,Christmas tree, perhaps
  Double defn: 1st: Trim,neat in dress or appearance; and 2nd: A conifer that could,perhaps be used as a Christmas tree.  Nice surface of 2 things one can do to a Christmas tree, "trim" being a Janus (two-faced) word meaning to add trimmings,ornaments,etc. and to remove surplus material to make it look neat.