snuff

1. N-UNCOUNT Snuff is powdered tobacco which people take by breathing it in quickly through their nose. 鼻烟

...the old man's habit of taking snuff. …那位老人吸鼻烟的习惯。

2. V to inhale through the nose 通过鼻子吸入

3. V to extinguish (a light from a naked flame, esp a candle) 熄灭(蜡烛)