Sentence:  Yet she must dye, else shee'l betray more men:/ <WSD>Put out</WSD> the Light, and then <WSD>put out</WSD> the Light:/ If I quench thee, thou flaming Minister,/ I can againe thy former light restore,/ Should I repent me. But once put out thy Light,/ Thou cunning'st Patterne of excelling Nature,/ I know not where is that Promethaean heate/ That can thy Light re-Lume. 
Meaning of the word marked with <WSD> tags:  To extinguish (fire).