Output (5)
'output' is the definition.
(I know that output can be written as yield)
This is all the clue.
(Other definitions for yield that I've seen before include "Surrenders or bears as a crop" , "Surrender, give in" , "Surrende, give in" , "amount of energy from 14 [EXPLOSION]" , "Produce, provide" .)
(Other definitions for extinguish that I've seen before include "Put out (a light/fire)" , "Quench" , "Stop" .)