The crossword solution for the term 'PECK OR POUND' is UNIT, which is a four-letter word. UNIT is a term used to describe a standard measure of a physical quantity, such as length, mass, time, and electric current. It is also used to refer to a group or collection of things that are considered to be related or associated with each other. In this case, the term 'PECK OR POUND' is referring to a UNIT of measurement for weight, which is either a peck or a pound.