The Collaborative International Dictionary of English v.0.48:

Maroon \Ma*roon"\, v. t. [imp. & p. p. Marooned; p. pr. & vb.
   n. Marooning.] [See Maroon a fugitive slave.]
   To put (a person) ashore on a desolate island or coast and
   leave him to his fate.
   [1913 Webster]

   Marooning party, a social excursion party that sojourns
      several days on the shore or in some retired place; a
      prolonged picnic. [Southern U. S.] --Bartlett.
      [1913 Webster]

WordNet (r) 3.0 (2006):

marooned
    adj 1: cut off or left behind; "an isolated pawn"; "several
           stranded fish in a tide pool"; "travelers marooned by the
           blizzard" [syn: isolated, marooned, stranded]

Moby Thesaurus II by Grady Ward, 1.0:

21 Moby Thesaurus words for "marooned":
   abandoned, aground, castaway, derelict, deserted, discarded,
   disused, forsaken, foundered, grounded, high and dry, jettisoned,
   left, on the rocks, set fast, shipwrecked, stranded, stuck,
   stuck fast, swamped, wrecked