[1] : 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 

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