I. ˈau̇t-ˌbȯrd adjective
Date: circa 1823
1. : situated outboard
2. : having, using, or limited to the use of an outboard motor
II. adverb
Date: circa 1848
1. : outside a ship's bulwarks : in a lateral direction from the hull
2. : in a position closer or closest to either of the wingtips of an airplane or to the sides of an automobile
III. noun
Date: 1935
1. : outboard motor
2. : a boat with an outboard motor