Wiktionary
vb. To exit a form of transportation such as a boat, ship, airplane, trolley, streetcar or spaceship.
Usage examples of "deboard".
He had to stop in Bahrain, where he hoped the two men would deboard, but they got off the plane only long enough to buy more cigarettes.
We deboard him before we reach Narinth and from there he can make his way to the coast.
We deboarded at Earthport Station, trudged down the endless service corridor to our transfer shuttle.
Surita found him again once they deboarded, and chatted happily as a bus took them from the airport across the island to the capital, toward a complex of low bungalow-style housing at the outskirts of town, surrounded by greenery.
The men deboarding those fanned out, crouched defensively, and awaited orders.
To deboard we must simply force it near a slope and roll off the higher side.