1 2 3 1 _ _ _ 2 _ _ _ 3 _ _ _ ACROSS 1) an informal term for a father; probably derived from baby talk 2) a human limb; technically the part of the superior limb between the shoulder and the elbow but commonly used to refer to the whole superior limb 3) a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite DOWN 1) the sound made by a gentle blow 2) the ball-shaped capsule containing the vertebrate eye 3) a syndrome that occurs in many women from 2 to 14 days before the onset of menstruation ** Scroll down for solution. ** Are you sure you want to peek? pop arm tbs