On board; into or within a ship or boat; hence, into or within a railway car. Alongside; as, close aboard. On board of; as, to go aboard a ship. Across; athwart.
- (Nautical) To fall aboard of, to strike a ship's side; to fall foul of.
- To haul the tacks aboard, to set the courses.
- To keep the land aboard, to hug the shore.
- To lay (a ship) aboard, to place one's own ship close alongside of (a ship) for fighting.