aboard Meaning, Definition & Usage

  1. adverb on a ship, train, plane or other vehicle
    on board.
  2. adverb on first or second or third base
    on base.
    • Their second homer with Bob Allison aboard
  3. adverb side by side
    alongside.
    • anchored close aboard another ship
  4. adverb part of a group
    • Bill's been aboard for three years now

WordNet

A*board" adverb
Etymology
Pref. a- on, in + board.
Definitions
  1. On board; into or within a ship or boat; hence, into or within a railway car.
  2. Alongside; as, close aboard.
A*board" preposition
Definitions
  1. On board of; as, to go aboard a ship.
  2. Across; athwart. Obs.
    Nor iron bands aboard The Pontic Sea by their huge navy cast. Spenser.

Webster 1913