Subpoena (noun)

1. A legal order requiring someone to attend court or produce certain documents.
2. A written order that requires someone to appear in court or to produce documents in a court case.

Origin:

From latin sub poena, 'under penalty'.

Examples:

1. The witness was served with a subpoena to testify at the trial.
2. The company was given a subpoena to produce documents related to the investigation.
3. The judge issued a subpoena for the CEO to appear in court.
4. The defendant was served with a subpoena to turn over all relevant documents.
5. The subpoena required the bank to provide the records of the defendant's accounts.