咬舌自尽

to commit suicide by biting off one's tongue

to bite / to nip

variant of 咬[yao3]

used in 喇舌[la3 ji1] to transcribe the Taiwanese word for "tongue"

tongue

self / oneself / from / since / naturally / surely

to kill oneself / suicide

to the greatest extent / (when used before a noun of location) furthest or extreme / to be within the limits of / to give priority to

to use up / to exhaust / to end / to finish / to the utmost / exhausted / finished / to the limit (of sth) / all / entirely