The term 'ROSIE, FOR ONE' is a reference to Rosie the Riveter, an iconic symbol of female empowerment during World War II. The crossword solution for this term is 'RIVETER, ' which is a seven-letter word meaning someone who fastens metal parts together with rivets. During World War II, many women took on the role of riveters in factories and shipyards, helping to build planes, tanks, and other military equipment. Rosie the Riveter was a fictional character created to represent these women and their contribution to the war effort.