In TAF, what does the contraction VRB refer to?

In a TAF (Terminal Aerodrome Forecast), the contraction VRB specifically refers to "Variable wind direction." This means that the wind direction is changing and does not consistently blow from one fixed direction. The forecast will indicate variability in wind directions as opposed to a steady wind coming from a specific angle. This is important for pilots, as varying wind conditions can have significant effects on flight operations, especially during takeoff, landing, and in-flight navigation. Understanding the term helps pilots assess potential challenges related to wind during different phases of flight.