any elderly pompous reactionary
- any senior pompous reactionary ultranationalistic individual (following the cartoon character developed by Sir David Low)
- a small nonrigid airship useful for observance or as a barrage balloon
1916, of obscure beginning, many claimants. "One of the strange coinages regarding the airmen" [Weekley]. Typical theory is the fact that it is from designers' model nickname Type B-limp, in sense of "without interior framework," instead of kind A-rigid; hence see limp (adj.).
blimp [coll.] [non-rigid airship]
The heightened anticipation sunk like an iron blimp when the first trunk was opened.