A sea letter.

A briefing in electronic or computerized form.

plural of e-briefing

plural of briefing note

singular of swim briefs

(historical) A royal mandate ordering collections to be made in chapels for building churches, etc.

(obsolete, slang) A bundle of worthless papers tied up with red tape, carried by unemployed barristers in the back rows of the courts to simulate briefs.

(US, government) Intelligence information from the Central Intelligence Agency (CIA) provided to the President of the United States (POTUS) every morning, to bring attention to pertinent information about international affairs.