- outboard - located away from the midline of a vessel or aircraft; "the outboard section of a wing"; "outboard rigging"
Antonym: inboard
- outboard motorboat, outboard - a motorboat with an outboard motor
--1 is a kind of motorboat, powerboat
- outboard motor, outboard - internal-combustion engine that mounts at stern of small boat
--2 is a kind of internal-combustion engine, ICE
--2 has parts: screw, screw propeller