Synonym of X線 (ekkusu-sen, “X-ray”); a Röntgen ray

arm

line / level / beam

hit (collide) / hit (strike a target) / press against something, apply / guess right, hit on, choose correctly

röntgen (unit of exposure to ionizing radiation) / Short for レントゲン線 (Rentogen-sen, “X-ray”).

doctor

(chiefly women's speech) first person singular pronoun: I, me

arm / ability / talent

(anatomy) arm / ability; skill; talent

arm