Source : Webster's Revised Unabridged Dictionary (1913)

Spur-royal \Spur"-roy`al\, n.
   A gold coin, first made in the reign of Edward IV., having a
   star on the reverse resembling the rowel of a spur. In the
   reigns of Elizabeth and of James I., its value was fifteen
   shillings. [Written also {spur-rial}, and {spur-ryal}.]