The term 'quarter or half' can be solved by two crossword solutions: COIN (4 letters) and PERIOD (6 letters). The term 'quarter or half' is commonly used to refer to a unit of measurement, such as a quarter or half of an hour, a quarter or half of a year, or a quarter or half of a dollar. The solution COIN refers to the fact that a quarter or half of a dollar is represented by coins, such as quarters and halves. The solution PERIOD refers to the fact that a quarter or half of a year is often referred to as a PERIOD of time, such as a quarter or half of a fiscal year.