Possibly saves vessels (5)
I believe the answer is:
vases
'vessels' is the definition.
(I know this)
'possibly saves' is the wordplay.
'possibly' is an anagram indicator.
'saves' anagrammed gives 'VASES'.
(Other definitions for vases that I've seen before include "Saves in containers for flowers" , "Pots for cut flowers" , "Containers for cut flowers" , "Vessels for flowers" , "Jars for flowers (5)" .)