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Death By Hanging
Remember how 縛る means "to tie?" Well if you tie something around someone's neck then it's called hanging. They'll probably die from it too, so it can also be death by hanging.
This is a combination of the words 縛る and 首. Both use the kun'yomi readings, so just change the る to り and it's pretty simple!
In the Edo period, there was a punishment called death by hanging.