Word Study
saltire
OXFORD DICTIONARY
saltire, n. Heraldry an ordinary formed by a bend and a bend sinister crossing like a St Andrew's cross.
Idiom
in saltire arranged in this way.
Derivative
saltirewise adv.
Etymology
ME f. OF sau(l)toir etc. stirrup-cord, stile, saltire, f. med.L saltatorium (as SALTATION)
For further exploring for "saltire" in Webster Dictionary Online