From Middle English abord, from a- (“on”) + bord (“board, side of a ship”). (Equivalent to a- + board.)
Middle English aborda-ona–2bordship (from Old English bord)
American Heritage Dictionary of the English Language, 5th Edition
Aboard Sentence Examples
Climbing aboard, he slapped the reins to the team.
With other captives, John Knox was put aboard a French galley.
Once aboard my flight I spent the next several hours squeezed between a talkative sailor and a woman with a fussy child.
Pedro aboard the flagship. In July they reached Portugal and occupied Oporto, but the expected constitutionalist rising did not take place.
He had aboard his two ships, the " Lady Nelson " of 60 tons and the whaler " Albion " of 3 06 tons, three officials, a lance-corporal and seven privates of the New South Wales Corps, six free men and twenty-five convicts, together with an adequate supply of live stock, and landed at Risdon, near Hobart, where he was joined shortly afterwards by fifteen soldiers and forty-two convicts.