[ uh-bawrd, uh-bohrd ]
/ əˈbɔrd, əˈboʊrd /


on board; on, in, or into a ship, train, airplane, bus, etc.: to step aboard.
alongside; to the side.
Baseball. on base: a homer with two aboard.
into a group as a new member: The office manager welcomed him aboard.


on board of; on, in, or into: to come aboard a ship.


    all aboard! (as a warning to passengers entering or planning to enter a train, bus, boat, etc., just before starting) Everyone get on!

Origin of aboard

1350–1400; Middle English abord(e) (see a-1, board), perhaps conflated with Middle French a bord

Can be confused

aboard abort abroad
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for aboard

British Dictionary definitions for aboard


/ (əˈbɔːd) /

adverb, adjective, preposition (postpositive)

on, in, onto, or into (a ship, train, aircraft, etc)
nautical alongside (a vessel)
all aboard! a warning to passengers to board a vehicle, ship, etc

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012