Send again
I think it could be either:
'send again' is the definition.
('ship' can be a synonym for 'send' so perhaps 'reship' is OK for 'send again')
This is all the clue.
(Other definitions for reship that I've seen before include "move for a second time" , "Dispatch by sea again" , "send out again" .)
'send again' is the definition.
('post' can be a synonym for 'send' so perhaps 'repost' is OK for 'send again')
This is all the clue.