ligature

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）.

life-span, life-style, life-support, life-time, life-work, lifebelt (also lifebuoy), lifeboat, lifeless, lifelessly, lifelessness, lifelike, lifeline, lifelong, lifer, lifestyle, lifetime, lift, lift-attendant, lift-off, ligament, light, light bulb, light industry, light meter, light pen, light up, light-coloured, light-fingered, light-headed, light-hearted, light-heartedly, light-heartedness, light-heavyweight, light-sensitive, light-year, lighten, lighter, lighterage, lighterman, lighthearted,