aboard UK /əˈbɔːd/US /əˈbɔɹd/adverb 5preposition 3 adverb5 •inside or onto a ship, a boat or a trainWe all climbed aboard. •On or onto a horse, a camel, etc. •Into a team, group, or company.The office manager welcomed him aboard. •Alongside.The ships came close aboard to pass messages.The captain laid his ship aboard the enemy's ship. •On base.He doubled with two men aboard, scoring them both. preposition3 •On board of; onto or into a ship, boat, train, plane.We all went aboard the ship. •Onto a horse. •(no longer used) Across; athwart; alongside.Nor iron bands aboard The Pontic Sea by their huge navy cast. — 1591
