Aboard

Word: [adverb] aboard (on first or second or third base)

Synonyms: on base

Example: Their second homer with Bob Allison aboard

Word: [adverb] aboard (on a ship, train, plane or other vehicle)

Synonyms: on board

Word: [adverb] aboard (part of a group)

Example: Bill's been aboard for three years now

Word: [adverb] aboard (side by side)

Synonyms: alongside

Example: Anchored close aboard another ship