HSK 7-9
纽扣
niǔkòu名
button
外套上的纽扣掉了一颗。
Wàitào shàng de niǔkòu diào le yìkē.
A button fell off the coat.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
Appears across levels (7-9) in the HSK 3.0 word list.