Tree yielding syrup (5)
I believe the answer is:
maple
'tree yielding syrup' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for maple that I've seen before include "Canadian national tree" , "Emblematic tree of Canada" , "Syrup-yielding tree" , "Tree: its leaf the Canadian emblem" , "Tree with winged fruits" .)