decimate

verb
1
to kill large numbers of animals, plants or people in a particular area
قتل‌عام کردن, کشتار انبوه کردن, کشتن جمعی
2
to severely damage something or make something weaker
نابود کردن, تضعیف کردن, ویران کردن
Cheap imports decimated the British cycle industry.