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' says the answer is hidden in the clue (an incomplete sample of the clue).
'URN' is hidden in the letters of '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" .)