Save broken urn (4)
I believe the answer is:
vase
'urn' is the definition.
(I've seen this in another clue)
'save broken' is the wordplay.
'broken' is an anagram indicator.
'save' is an anagram of 'VASE'.
(Other definitions for vase that I've seen before include "Jar for cut flowers" , "Flower container - save it" , "Cut-flower container" , "Urn" , "Ornamental vessel (for flowers etc)" .)