1. aboard - Adverb
2. aboard - Preposition
On board; into or within a ship or boat; hence, into or within a railway car.
Alongside; as, close aboard.
On board of; as, to go aboard a ship.
Across; athwart.
Source: Webster's dictionaryTheir second homer with Bob Allison aboard Source: Internet
Bill's been aboard for three years now Source: Internet
anchored close aboard another ship Source: Internet
About 500 passengers left the cruise ship Diamond Princess on Wednesday at the end of a much-criticised two-week quarantine aboard the vessel, docked in Japan, that failed to stop the spread of the new virus among passengers and crew. Source: Internet
2011/2012 New Year's Party aboard QE2 On 31 December 2011 the QE2 was the location of a lavish New Year's Eve party in Dubai. citation The black tie event citation was run by Global Event Management and included over 1,000 guests. Source: Internet
About half of them died in captivity, many thousands of them aboard prison ships anchored in Brooklyn’s Wallabout Bay, later home of that borough’s Navy Yard. Source: Internet