栓 plug, bolt, cork, bung, stopper 10 strokes jōyō, taught in secondary school old JLPT 1 #2199 in newspapers Readings Onセン In Chinese 栓 Words written with it 栓 せん stopper N2 栓抜き せんぬき bottle opener 血栓 けっせん thrombus 脳血栓 のうけっせん cerebral thrombosis