缳 繯 huan2
to bind; to tie; lace; noose (for suicide); hangman's noose

strokes 16
radical
纟
糸
strokes after radical 13
缳首 繯首 huan2 shou3
death by hanging

投缳 投繯 tou2 huan2
to hang oneself; to commit suicide by hanging

投缳自缢 投繯自縊 tou2 huan2 zi4 yi4
to hang oneself (idiom)