aboard
a-board
adverb
On or into a ship, aircraft, train, or other vehicle.
"The passengers quickly went aboard."
preposition
On or into (a ship, aircraft, train, or other vehicle).
"She stepped aboard the bus."
a-board
On or into a ship, aircraft, train, or other vehicle.
"The passengers quickly went aboard."
On or into (a ship, aircraft, train, or other vehicle).
"She stepped aboard the bus."