the fact of achieving something that was difficult to do
دستاورد, موفقیت, موفقیت بزرگ, موفقیت شگرف, دستاورد مهم, پیروزی بزرگ
Getting this contract has been quite a coup for us.
He pulled off a major diplomatic coup by winning agreement from all the warring factions on a permanent ceasefire.