n.
 informal    - 
(also Colonel Blimp)
 Brit. a pompous, reactionary person.
 - a small airship or barrage balloon.
 - N. Amer. an obese person.
 - a soundproof cover for a film camera.
 
 
  Derivative
  
  Etymology
  First World War (in sense 2); sense 1 derives from a character invented by the cartoonist David Low.