詰まる
つまる · tsumaru · JLPT N2 · verb-godan
to be blocked
🚧 詰まる = 詰 (stuff in) + まる (become): becomes stuffed in, so packed or blocked
This verb is intransitive. 詰める (tsumeru) means to stuff something, while 詰まる means it becomes stuffed. A drain stuffed with hair is 詰まる, and a packed train is also 詰まる.