Flower containers (5)
I believe the answer is:
vases
'flower containers' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for vases that I've seen before include "Containers for cut flowers" , "Receptacles for cut flowers" , "Vessels for flowers" , "Jars for flowers (5)" , "Open jars for flowers" .)