saltire Meaning, Definition & Usage

  1. noun a cross resembling the letter x, with diagonal bars of equal length
    St. Andrew's cross.

WordNet

Sal"tire noun
Etymology
F. sautoir, fr. LL. saltatorium a sort of stirrup, fr. L. saltatorius saltatory. See Saltatory, Sally, v.
Definitions
  1. (Her.) A St. Andrew's cross, or cross in the form of an X, -- one of the honorable ordinaries.

Webster 1913