1. [informal] Intense adverse criticism
   "don't give me any flak";
   - fire, attack, flack, blast [informal], stick [Brit, informal]
    
2. Artillery designed to shoot upward at airplanes
   "The military base was protected by flak guns";
   - antiaircraft, antiaircraft gun, flack, pom-pom, ack-ack [informal], ack-ack gun
    
3. [N. Amer, informal] A slick spokesperson who can turn any criticism to the advantage of their employer
   "The company's flak deftly handled the press conference after the product recall";
   - flak catcher [N. Amer, informal], flack catcher [N. Amer, informal], flack [N. Amer, informal]

Derived forms: flaks

Type of: criticism, gun, interpreter, representative, spokesperson, unfavorable judgment [US], unfavourable judgment [Brit, Cdn], voice

Encyclopedia: Flak