[1] : The Collaborative International Dictionary of English v.0.48

aboard \aboard"\, prep.
   1. on board of; as, to go aboard a ship.
      1913 webster

   2. across; athwart. obs.
      1913 webster

            nor iron bands aboard
            the pontic sea by their huge navy cast. --spenser.
      1913 webster

[2] : The Collaborative International Dictionary of English v.0.48

aboard \aboard"\, adv. pref. a- on, in + board.
   1. on board; into or within a ship or boat; hence, into or
      within a railway car.
      1913 webster

   2. alongside; as, close aboard.
      1913 webster naut.:

   to fall aboard of, to strike a ship's side; to fall foul
      of.

   to haul the tacks aboard, to set the courses.

   to keep the land aboard, to hug the shore.

   to lay a ship aboard, to place one's own ship close
      alongside of a ship for fighting.
      1913 webster
see also:
to fall aboard of to haul the tacks aboard to keep the land aboard to lay a ship aboard 

[3] : WordNet (r) 2.0

aboard
     adv 1: on a ship, train, plane or other vehicle syn: onboard
     2: on first or second or third base; "their second homer with
        bob allison aboard" syn: on base
     3: side by side; "anchored close aboard another ship" syn: alongside
     4: part of a group; "bill's been aboard for three years now"
see also:
onboard on base alongside 

[4] : Moby Thesaurus II by Grady Ward, 1.0

31 moby thesaurus words for "aboard":
   afloat, all aboard, aloft, among us, athwart the hawse,
   athwarthawse, aye, before the mast, here, hereabout, hereabouts,
   hereat, hereinto, hereto, hereunto, hither, hitherward,
   hitherwards, in sail, in this place, in this vicinity, just here,
   on board, on board ship, on deck, on shipboard, on the spot,
   somewhere about, to this place, topside, with us

Aboard >> A Words
Aboard, definition of term: Aboard
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