HSK 5
安
ān形动
(bound form) calm; peaceful; to calm; to set at ease; safe; secure; in good health; content; satisfied (as in 安于); to place (sb) in a suitable position (job); to install; to fix; to fit; surname An
工人正在给新门安锁。
Gōng rén zhèng zài gěi xīn mén ān suǒ.
The worker is installing a lock on the new door.
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New in the HSK 3.0 word list at level 5.