noun, plural sixpence, sixpences for 2.
(used with a singular or plural verb) British. a sum of six pennies.
(used with a singular verb) a cupronickel coin of the United Kingdom, the half of a shilling, formerly equal to six pennies: equal to two and one-half new pence after decimalization in 1971.
Origin: 1350–1400; Middle English sexe pans.