Vessel's incomplete journey (3)
I believe the answer is:
urn
'vessel's' is the definition.
(urn is a type of container)
'incomplete journey' is the wordplay.
'incomplete' indicates the answer is hidden within the clue (an incomplete sample of the clue).
'URN' is hidden within 'journey'.
(Other definitions for urn that I've seen before include "A large vase as for human ashes" , "Spore-producing capsule of a moss" , "Run to get Greek vase" , "Container for tea or ashes" , "Tall vase with stem" .)