取れる
とれる · toreru · JLPT N3 · verb-ichidan
to come off
🔘 toreru sounds like tore: the button tore off. 取る (take) + れる = it comes off
取 means take. 取る (toru) is when you take something off on purpose. 取れる (toreru) is the intransitive form: the thing comes off by itself, like a loose button or a stain. The English verb tore is a sound hook for it.
取 — ear 耳 + hand 又
取 originally depicted a hand (又) grasping an ear (耳), referencing the ancient practice of soldiers cutting off enemies' left ears as proof of kills to claim rewards. The meaning broadened from 'seize/take by force' to the general sense of 'take, get, obtain' used today.