(aeronautics) A device which warns the pilot that the aircraft may be in danger of collision with the ground.

plural of ground proximity warning system

(aviation) An onboard system used to avoid controlled flight into terrain (CFIT).

plural of terrain awareness and warning system

A surname originating as a patronymic derived from a medieval given name, from Germanic war, warin "cautious; heedful; wary; watchful" + her, heri "army", modern German Werner.

(US, military) Abbreviation of warning order.

A city in Georgia, United States.

plural of warner

One who warns.

Obsolete form of warrener.