1to extinguish or put out
2to go out (of a fire etc)
3to exterminate or wipe out
4to drown
Examples
suǒ yǒu所有de的dēng guāng灯光tóng shí同时miè灭le了。
所有的灯光同时灭了。
All at the same time, the lights went out.
灯突然灭了。
Suddenly, the light went out.
火已经灭了。
The fire has gone out.