ˈpaper trail BrE AmE noun [countable usually singular]
documents and records that show what someone has done, especially ones proving that someone is guilty of a crime:
The paper trail led investigators straight to the White House.
ˈpaper trail BrE AmE noun [countable usually singular]
documents and records that show what someone has done, especially ones proving that someone is guilty of a crime:
The paper trail led investigators straight to the White House.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012