A bower (6)
I believe the answer is:
arbour
'a bower' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for arbour that I've seen before include "Secluded garden alcove" , "Shady place among trees is in garden" , "'Bower, pergola (6)'" , "Shady alcove; bower" , "Shady garden roofed by trees" .)