aboard

/əˈbɔərd/

/əˈbɔd/

The adverb aboard means on board, as in on a ship, train or plane. Usually the captain will welcome you aboard with a brief speech if you're lucky — or a long one if you're not.

Aboard comes from the French phrase à bord, which has the same meaning as the English word — on board. If you were just hired, your new manager might say "Welcome aboard" (the figurative company train). The phrase "All aboard!" is said as a warning before departure, especially before a ship or train leaves. It means, in essence: haul your keister up here quick or you'll be left behind!

Definitions of aboard

1. adverb

   on a ship, train, plane or other vehicle
   synonyms: on board
2. adverb

   on first or second or third base
   “Their second homer with Bob Allison aboard”

   synonyms: on base
3. adverb

   side by side
   “anchored close aboard another ship”

   synonyms: alongside
4. adverb

   part of a group
   “Bill's been aboard for three years now”