On (a train or ship) (6)
I believe the answer is:
aboard
(Other definitions for aboard that I've seen before include "on a yacht maybe" , "on a plane, perhaps" , "Alongside" , "On (a ship, train, etc)" , "in a car" .)
I believe the answer is:
aboard
(Other definitions for aboard that I've seen before include "on a yacht maybe" , "on a plane, perhaps" , "Alongside" , "On (a ship, train, etc)" , "in a car" .)