Definitions

1. noun

A vertical stabilizer or fin, especially on a helicopter or an airplane, that is attached to the tail and provides stability during flight.

“The pilot made adjustments to the flytail to improve the aircraft’s balance.”

2. noun

A device or appendage, such as a fin or a rudder, that provides directional stability or control.

“The engineer designed a flytail to increase the boat’s maneuverability.”