What is "spoil five"

n. (alternative form of spoilfive English)

Spoil-Five, Spoilt Five, Five and Ten, is the traditional book version of the Irish national card game called Twenty-Five, which underlies the Canadian game of Forty-Five. Charles Cotton describes it in 1674 as "Five Fingers", a nickname applied to the Five of Trumps extracted from the fact that the Irish word cuig means both 'five' and 'trick'. It is supposed to be of great antiquity, and widely believed to have originated in Ireland. It may be identified with the game of Maw, of which James I of England was very fond.