ligature
/ˈlɪgətʃə(r); `lɪɡəˌtʃɚ/ n
1 thread, bandage, etc used for tying, esp in surgical operations （用作绑缚的）线, 绷带; （尤指外科的）结扎线, 缚线.
2 (music 音) smooth combination of two or more notes of different pitch, or mark indicating this; slur; tie 连音; 连结线.
3 (in printing) two or more joined letters, such as or （印刷的）连字（如或）.