dragnet

noun
1
a net that is pulled through water to catch fish, or along the ground to catch animals
تور صید ماهی, تور ماهی‌گیری
2
a careful and complete search, especially for a criminal
تور تجسس, تور بازرسی, شبکه تعقیب و جستجو, طرح جستجوی دقیق