The crossword solution for the term 320 MAKE A MILE is 'Rods, ' which is a four-letter word. The term 320 MAKE A MILE is a reference to the old saying, 'measure twice, cut once, ' which is a proverb that encourages people to be careful and precise when doing something. In this case, it is referring to the use of rods to measure distances, as rods were commonly used in the past to measure distances in miles. Therefore, the solution 'rods' is a reference to the use of rods to measure distances.