Green’s Dictionary of Slang

1. a very fat person.

1919		A. Baer Two & Three 16 July [synd. col.] The old blimp knows he can’t finish the voyage [i.e. round of golf] with only five pills in his fuel tank.
1934		T. Minehan Boy and Girl Tramps of America (1976) 15: Here, you, Blimp, [...] take these tins down to the river.
1941		P. Kendall Army and Navy Sl. 2: A baby blimp...a jolly fat girl.
1949		Monteleone Criminal Sl. (rev. edn).
1972		D. Jenkins Semi-Tough 53: Earlene the Blimp wants to know if our book is going to make us rich.
1974		C. Loken Come Monday Morning 79: Some’a the blimps even had on rubberized jobs.
1984		LaBarge & Holt Sweetwater Gunslinger 201 (1990) 41: I’ll be a blimp, probably with stretch marks too.
1987		‘Joe Bob Briggs’ Joe Bob Goes to the Drive-In 22: The giant is the opposite of a shrimp. ‘What’s that?’ ‘Blimp.’.
1990		S. Morgan Homeboy 7: Now way Rings wanted to run up on the Pimp Blimp.
1993		B. Moore Lex. of Cadet Lang. 45: blimp derogatory term for a fat, unfit cadet.
2005		J. Stahl I, Fatty 37: Unt now, ve haf a young blimp [...] named Fatty.
2012		(con. 1954) ‘Jack Tunney’ Tomato Can Comeback [ebook] ‘Are you his manager, then?’ ‘Kolodzei,’ the toad-faced blimp said .

2. a promiscuous young woman.

1926		Judge (NY) 91 July-Dec. 31: Blimp - Girl friend.
1927		Danville (VA) Bee 27 May 3/1: The U. S. Navy has a language or a ‘slanguage’ all its own. For instance [...] girls are [...] ‘blimps’.
1932		J.L. Kuethe ‘Johns Hopkins Jargon’ in AS VII:5 329: blimp—a girl of doubtful morals.
1942		N. Algren Never Come Morning (1988) 42: Blimps cheatin’ on their husbands ’n boyfriends.
1949		Monteleone Criminal Sl. (rev. edn).
1960, 1975		Wentworth & Flexner DAS.
1965		‘Miscellany’ AS XL:1 77: Two terms they [i.e. freshmen at U. Nebraska] defined as meaning ‘a woman of loose morals’: bag and blimp.
1971		Winick & Kinsie Lively Commerce 41: Fat prostitutes are often called ‘blimps’.

3. a backward-looking, ultra-conservative figure, orig. a military man personified as Colonel Blimp, terrified of progress and determined to do anything to prevent it.

1929		A.T. Rogers ‘Casual Observer’ in Charlotte Obs. (NC) 10 Feb. n.p./6: One of the blimps struggled vainly to focus his gaze.
1934		Eve. Standard 28 May 10: [cartoon caption] Prime Minister Blimp: ‘Gad, sir, the Air League is right. We must oppose all proposals for the abolition of military aviation.’.
1936		M. Levin Old Bunch (1946) 129: Oh, don’t be a blimp. Why, Rose, you can talk better than any of us.
1937		‘George Orwell’ Road to Wigan Pier in Complete Works V (1986) 153: Easy to laugh at patriotism and [...] the Old School Tie and Colonel Blimp.
1944		J. Cary Horse’s Mouth (1948) 268: He used to curse the government and say that it was a lot of Boorjuice Blimps starving the inventive genius of the nation.
1956		J. Osborne Look Back in Anger Act II: Going to the dogs, as the Blimps are supposed to say.
1969		N. Spinrad Bug Jack Barron 27: Shit, the old blimp looks like he’s scared stiff.
1976		(con. 1920s) V. King Weeping and Laughter 155: Willie managed to steal a hair from his father’s comb and I incorporated it into a plasticine effigy of the old blimp.
1997		R. Rendell Road Rage (1998) 313: Transform himself into a strutting Blimp.
2018		‘Aidan Truhen’ Price You Pay 111: She wants to stop having sex with her blimp husband and move the fuck on.