As an adjective outboard
is situated outside the hull of a vessel.
As a noun outboard
is an outboard motor.
As a verb offboard is
to alight, especially from public transit or an aircraft.
Situated outside the hull of a vessel.
Positioned away from the centre line of a ship or aircraft.
An outboard motor.
A vessel fitted with an outboard motor.
A studio having outboard gear (compressor, equalizer, etc.).
To alight, especially from public transit or an aircraft