Noun. Coined by the U.S. Coast Guard , refers to any female, particularly ones stationed on cutters, who are scandalous by nature and promiscuous with the male enlisted. As for civilian morale gear, these are females who make it a point to be sexually involved with male enlisted U.S.C. G.'s , even " making rounds through the unit". The better the morale gear the higher the rate. MG3 is sub-par. MG2 is good. MG1 is smokin' hot.