投缳自缢

to hang oneself (idiom)

to cast / to send / to throw oneself (into the river etc) / to seek refuge / to place oneself into the hands of

to hang oneself / to commit suicide by hanging

to bind / to tie / lace / noose (for suicide) / hangman's noose

self / oneself / from / since / naturally / surely

to hang oneself

(literary) to die by hanging or strangulation