1 2 3 1 _ _ _ 2 _ _ _ 3 _ _ _ ACROSS 1) an informal debt instrument; representing `i owe you' 2) any of various long-tailed rodents similar to but larger than a mouse 3) a unit of surface ___a equal to 100 squ___ meters DOWN 1) a militant organization of irish nationalists who used terrorism and guerilla warfare in an effort to drive british forces from northern ireland and achieve a united independent ireland 2) an implement used to propel or steer a boat 3) a member of the shoshonean people of utah and colorado and new mexico ** Scroll down for solution. ** Are you sure you want to peek? iou rat are