锁

suǒ

HSK 5

锁 — suǒ

1. to lock; to lock up; (also) a lock (object)

   请把大门锁好，再检查一下窗户。 qǐng bǎ dàmén suǒhǎo zài jiǎncháyīxià chuānghù — Please lock the front door properly and check the windows.