A bushel fraction is a unit of measurement used to measure the amount of a certain commodity. The term 'bushel fraction' is composed of four words: PECK (4 letters), epha (4 letters), SLEW (4 letters), and PECKS (5 letters). A PECK is a unit of dry volume equal to 8 dry quarts, an epha is a unit of dry volume equal to one-third of a bushel, a SLEW is a unit of dry volume equal to 4 PECKS, and a PECKS is a unit of dry volume equal to 2 dry gallons. Together, these four words make up the term 'bushel fraction, ' which is used to measure the amount of a certain commodity.