extinguish
/ɪkˈstɪŋgwɪʃ; ɪk`stɪŋɡwɪʃ/ v[Tn]
1
(a) cause (sth) to stop burning; put out 使（某物）熄灭; 扑灭
Please extinguish your cigarettes. 请将香烟熄灭.
They tried to extinguish the flames. 他们竭力要把火焰扑灭.
(b) (fig fml 比喻, 文) end the existence of (hope, love, passion, etc) 使（希望、 爱情、 激情等）不复存在
His behaviour extinguished the last traces of affection she had for him. 他的这种行为使她对他的最後一丝爱慕之情荡然无存.
2 clear or pay off (a debt) 清偿（债务）.> extinguisher = fire extinguisher (fire).