The Collaborative International Dictionary of English v.0.48:

Southern \South"ern\ (?; 277), a. [AS. s[=u][eth]ern. See
   South.]
   Of or pertaining to the south; situated in, or proceeding
   from, the south; situated or proceeding toward the south.
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   Southern Cross (Astron.), a constellation of the southern
      hemisphere containing several bright stars so related in
      position as to resemble a cross.

   Southern Fish (Astron.), a constelation of the southern
      hemisphere (Piscis Australis) containing the bright star
      Fomalhaut.

   Southern States (U.S. Hist. & Geog.), the States of the
      American Union lying south of Pennsylvania and the Ohio
      River, with Arkansas, Louisiana, and Texas. Before the
      Civil War, Missouri also, being a slave State, was classed
      as one of the Southern States.
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The Collaborative International Dictionary of English v.0.48:

Cross \Cross\ (kr[o^]s; 115), n. [OE. crois, croys, cros; the
   former fr. OF. crois, croiz, F. croix, fr. L. crux; the
   second is perh. directly fr. Prov. cros, crotz. fr. the same
   L. crux; cf. Icel. kross. Cf. Crucial, Crusade, Cruise,
   Crux.]
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   1. A gibbet, consisting of two pieces of timber placed
      transversely upon one another, in various forms, as a T,
      or +, with the horizontal piece below the upper end of the
      upright, or as an X. It was anciently used in the
      execution of criminals.
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            Nailed to the cross
            By his own nation.                    --Milton.
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   2. The sign or mark of the cross, made with the finger, or in
      ink, etc., or actually represented in some material; the
      symbol of Christ's death; the ensign and chosen symbol of
      Christianity, of a Christian people, and of Christendom.
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            The custom of making the sign of the cross with the
            hand or finger, as a means of conferring blessing or
            preserving from evil, is very old.    --Schaff-Herzog
                                                  Encyc.
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            Before the cross has waned the crescent's ray. --Sir
                                                  W. Scott.
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            Tis where the cross is preached.      --Cowper.
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   3. Affiction regarded as a test of patience or virtue; trial;
      disappointment; opposition; misfortune.
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            Heaven prepares a good man with crosses. --B.
                                                  Jonson.
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   4. A piece of money stamped with the figure of a cross, also,
      that side of such a piece on which the cross is stamped;
      hence, money in general.
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            I should bear no cross if I did bear you; for I
            think you have no money in your purse. --Shak.
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   5. An appendage or ornament or anything in the form of a
      cross; a badge or ornamental device of the general shape
      of a cross; hence, such an ornament, even when varying
      considerably from that form; thus, the Cross of the
      British Order of St. George and St. Michael consists of a
      central medallion with seven arms radiating from it.
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   6. (Arch.) A monument in the form of a cross, or surmounted
      by a cross, set up in a public place; as, a market cross;
      a boundary cross; Charing Cross in London.
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            Dun-Edin's Cross, a pillared stone,
            Rose on a turret octagon.             --Sir W.
                                                  Scott.
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   7. (Her.) A common heraldic bearing, of which there are many
      varieties. See the Illustration, above.
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   8. The crosslike mark or symbol used instead of a signature
      by those unable to write.
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            Five Kentish abbesses . . . .subscribed their names
            and crosses.                          --Fuller.
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   9. Church lands. [Ireland] [Obs.] --Sir J. Davies.
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   10. A line drawn across or through another line.
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   11. Hence: A mixing of breeds or stock, especially in cattle
       breeding; or the product of such intermixture; a hybrid
       of any kind.
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             Toning down the ancient Viking into a sort of a
             cross between Paul Jones and Jeremy Diddler. --Lord
                                                  Dufferin.
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   12. (Surveying) An instrument for laying of offsets
       perpendicular to the main course.
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   13. (Mech.) A pipe-fitting with four branches the axes of
       which usually form's right angle.
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   Cross and pile, a game with money, at which it is put to
      chance whether a coin shall fall with that side up which
      bears the cross, or the other, which is called pile, or
      reverse; the game called heads or tails.

   Cross bottony or

   Cross botton['e]. See under Bottony.

   Cross estoil['e] (Her.). a cross, each of whose arms is
      pointed like the ray of a star; that is, a star having
      four long points only.

   Cross of Calvary. See Calvary, 3.

   Southern cross. (Astron.) See under Southern.

   To do a thing on the cross, to act dishonestly; -- opposed
      to acting on the square. [Slang]

   To take up the cross, to bear troubles and afflictions with
      patience from love to Christ.
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WordNet (r) 3.0 (2006):

Southern Cross
    n 1: a small conspicuous constellation in the southern
         hemisphere in the Milky Way near Centaurus [syn: Southern
         Cross, Crux, Crux Australis]