blimp (n.)

"non-rigid airship," 1916, of obscure origin, with many claimants (even J.R.R. Tolkien had a guess at it). "One of the weird coinages of the airmen" [Weekley]. Common theory (which dates to 1919) is that it is from designers' prototype nickname Type B-limp, in the sense of "without internal framework," as opposed to Type A-rigid; thus see limp (adj.), but references are wanting. There apparently was a type b in the U.S. military's development program for airships in World War I.

updated on June 09, 2017

Definitions of blimp from WordNet
blimp (n.)
a small nonrigid airship used for observation or as a barrage balloon;
Synonyms: sausage balloon / sausage
Blimp (n.)
any elderly pompous reactionary ultranationalistic person (after the cartoon character created by Sir David Low);
Synonyms: Colonel Blimp
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