decimate - Dictionary definition and meaning for word decimate
deci [means 10]mate[in ,chess mate means killing a king]so it sound like killing a king in every 10 people,so to kill a king u have to kill 10 persons.so ie make killing at huge amount.
decimate->deci+ mate AIDS guy will be kill in large numbers
Deshi + mate(friends) : Rajakars were deshi mate of Pakistani force in Bangladesh. Rajakars killed a lot of men of Bangladesh.