Trim the Christmas tree (6)

I believe the answer is:

spruce

I believe this is a double definition.

'trim' is the first definition.
(synonyms)

'christmas tree' is the second definition.
(I've seen this before)

'the' is the link.

(Other definitions for spruce that I've seen before include "Evergreen pyramid-shaped tree" , "thing for fairy to be on top of?" , "Neat and smart like pine tree" , "One [TYPE OF TREE]" , "Neat and trim like fir tree" .)

I've seen this clue in The Globe and Mail and The Irish Independent.

Want a hint initially instead of a full solution? Install my app