The Collaborative International Dictionary of English v.0.48:

Saltire \Sal"tire\, n. [F. sautoir, fr. LL. saltatorium a sort
   of stirrup, fr. L. saltatorius saltatory. See Saltatory,
   Sally, v.] (Her.)
   A St. Andrew's cross, or cross in the form of an X, -- one of
   the honorable ordinaries.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ordinary \Or"di*na*ry\, n.; pl. Ordinaries (-r[i^]z).
   1. (Law)
      (a) (Roman Law) An officer who has original jurisdiction
          in his own right, and not by deputation.
      (b) (Eng. Law) One who has immediate jurisdiction in
          matters ecclesiastical; an ecclesiastical judge; also,
          a deputy of the bishop, or a clergyman appointed to
          perform divine service for condemned criminals and
          assist in preparing them for death.
      (c) (Am. Law) A judicial officer, having generally the
          powers of a judge of probate or a surrogate.
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   2. The mass; the common run. [Obs.]
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            I see no more in you than in the ordinary
            Of nature's salework.                 --Shak.
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   3. That which is so common, or continued, as to be considered
      a settled establishment or institution. [R.]
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            Spain had no other wars save those which were grown
            into an ordinary.                     --Bacon.
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   4. Anything which is in ordinary or common use.
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            Water buckets, wagons, cart wheels, plow socks, and
            other ordinaries.                     --Sir W.
                                                  Scott.
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   5. A dining room or eating house where a meal is prepared for
      all comers, at a fixed price for the meal, in distinction
      from one where each dish is separately charged; a table
      d'h[^o]te; hence, also, the meal furnished at such a
      dining room. --Shak.
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            All the odd words they have picked up in a
            coffeehouse, or a gaming ordinary, are produced as
            flowers of style.                     --Swift.
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            He exacted a tribute for licenses to hawkers and
            peddlers and to ordinaries.           --Bancroft.
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   6. (Her.) A charge or bearing of simple form, one of nine or
      ten which are in constant use. The bend, chevron,
      chief, cross, fesse, pale, and saltire are
      uniformly admitted as ordinaries. Some authorities include
      bar, bend sinister, pile, and others. See Subordinary.
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   In ordinary.
      (a) In actual and constant service; statedly attending and
          serving; as, a physician or chaplain in ordinary. An
          ambassador in ordinary is one constantly resident at a
          foreign court.
      (b) (Naut.) Out of commission and laid up; -- said of a
          naval vessel.

   Ordinary of the Mass (R. C. Ch.), the part of the Mass
      which is the same every day; -- called also the canon of
      the Mass.
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WordNet (r) 3.0 (2006):

saltire
    n 1: a cross resembling the letter x, with diagonal bars of
         equal length [syn: St. Andrew's cross, saltire]