document
n. countable A2 Elementary Oxford US //ˈdɑkjəmɛnt// doc·u·ment
n. a piece of paper or a digital file that gives information or proof of something.
n. a piece of written, printed, or electronic matter that provides information or evidence or that serves as an official record.
Please save the document before you close the program.
The lawyer asked me to sign the legal document to confirm that I agreed to the terms.
Historians rely on primary source documents to reconstruct the daily lives of people who lived centuries ago, as these records offer direct evidence of past events.
Borrowed from Middle French document, from Latin documentum.
Usage
Often used with verbs like 'attach', 'file', 'sign', or 'upload'.