The term FOOT-POUND RELATIVE is related to the unit of energy measurement, and the crossword solution for this term is ERG. An ERG is a unit of energy equal to the work done by a force of one dyne acting over a distance of one centimeter. It is also equal to 10−7 joules or one ten-millionth of a joule. The foot-pound relative is a unit of energy that is equal to the amount of energy required to move one pound of mass a distance of one foot.