A thread or string for tying the blood vessels,
particularly the arteries, to prevent hemorrhage.
That thingamajig on a clarinet mouthpiece thats a real [PITA] to adjust---you have to poke around on the bottom of the [reed] and avoid touching the rails of the mouthpiece in order to align the reed correctly.
(n.) A thing on Victors clarinet.
* These videos are coming directly from Youtube, they may or may not be most relevant to the word "Ligature"