Vessel of the new era (4)
I believe the answer is:
ewer
'vessel' is the definition.
(I know that ewer is a type of vessel)
'of the new era' is the wordplay.
'of' indicates a hidden word.
'EWER' can be found hidden inside 'new era'.
(Other definitions for ewer that I've seen before include "Water-jar" , "Sort of jug" , "A type of jug" , "Water jug with wide mouth" , "29 [VESSEL]" .)