aboard

 
Pronunciation: /əˈbɔːd/

adverb & preposition

  • on or into (a ship, aircraft, train, or other vehicle): [as adverb]: the plane crashed, killing all 158 people aboard figurative he came aboard as IBM’s new chairman [as preposition]: I climbed aboard the yacht
  • on or on to (a horse): [as adverb]: with Richard Migliore aboard, he won the cup at a gallop
  • Baseball on base: [as adverb]: putting their first batter aboard

Phrases

all aboard!

a call warning passengers to get on a ship, train, or bus that is about to depart.

Origin:

late Middle English: from a-2 (expressing motion) + board, reinforced by Old French à bord