what is a penny
For other uses, see Pence (disambiguation). A penny is a coin (pl. pennies) or a unit of currency (pl. pence) in various countries. Borrowed from the Carolingian denarius (whence its former abbreviation d.), it is usually the smallest denomination within a currency system. Presently, it is the formal name of the British penny (abbr. p) and the informal name of one American cent (abbr.