Plain English Meaning

The set of rules that apply when you're flying by looking out the window, in good enough weather to see where you're going and to spot other aircraft yourself.

Full Definition

Visual Flight Rules (VFR) are the regulations under which a pilot operates an aircraft in weather conditions clear enough to fly by outside visual reference, navigating and avoiding other aircraft by looking out of the cockpit. VFR flight requires the pilot to maintain specified minimum visibility and distance from clouds, as set out in the Federal Aviation Regulations.