1. Located farthest toward the stern or rear of a ship or aircraft.
Usage: nautical/aviation; superlative form of 'aft'

Examples

• The aftmost cabin on the ship offered a view of the wake.
• Passengers in the aftmost seats experienced more turbulence during the flight.
• The aftmost mast was the last to be repaired after the storm.
• The captain's quarters were located in the aftmost section of the vessel.
• The aftmost cargo hold was used for the heaviest freight.