Etymology From Middle English abord, from a- (“on”) + bord (“board, side of a ship”); equivalent to a- + board.
1
On board; into or within a ship or boat; hence, into or within a railway car.
We all climbed aboard.
As the 1857 to Manchester Piccadilly rolls in, I scan the windows and realise there are plenty of spare seats, so I hop aboard. The train is a '221'+'220' combo to allow for social distancing - a luxury on an XC train as normally you're playing sardines, so I make the most of it.2020 December 2, Paul Bigland, “My weirdest and wackiest Rover yet”, in Rail, page 68:
1 more example
Trump said he signed the executive orders while aboard Air Force One on a return flight to Washington from Florida.2025 January 27, Alayna Treene, Pamela Brown, Haley Britzky and Oren Liebermann, “Trump signs executive orders to reshape the military, including banning transgender troops”, in CNN:
Etymology From Middle English abord, from a- (“on”) + bord (“board, side of a ship”); equivalent to a- + board.
1
On board of; onto or into a ship, boat, train, plane.
We all went aboard the ship.
Conditions were horrendous aboard most British naval vessels at the time. Scurvy and other diseases ran rampant, killing more seamen each year than all other causes combined, including combat.2012 March 23, William E. Carter, Merri Sue Carter, “The British Longitude Act Reconsidered”, in American Scientist, volume 100, number 2, page 87: