Green’s Dictionary of Slang

Zep n.

also Zepp
[abbr.]

a Zeppelin airship; thus attrib.

[UK]Western Dly Press 25 Jan. 3/5: The ‘Zep’ shone on her light again. It me and the place lit up like day. Then they dropped another bomb.
[UK]Somme-Times 31 July (2006) 118/2: You’ll hold me rather close because I’m scared of Zepps.
[UK]A. Brazil Madcap of the School 70: ‘Are the Zepps likely to come, Miss Gibbs?’ enquired Ardiune. ‘Not so likely at this time of year as in winter’.
[UK]A. Brazil Madcap of the School 71: ‘With proper preparation we might engineer a very neat little Zepp raid’.
[US] letter in K.F. Cowing Dear Folks at Home (1919) 35: A big Zep flew high overhead.
[Scot]Dundee Courier 22 Oct. 5/7: [headline] America to build Super-Zepp.
[US]W. Winchell On Broadway 8 Aug. [synd. col.] Two morning tabloids assigned their hocus-focus experts to shoot tthe Zep.
[UK]Western Gaz. 2 May 16/6: Zep Over Wembley [...] For the first time on Saturday London has had a visit from a German Zeppelin in peace time.
[Aus](con. WWI) L. Mann Flesh in Armour 258: ‘[W]e saw the Zepp [...] just like a silver cigar’.
[UK] (ref. to 1914) F.D. Sharpe Sharpe of the Flying Squad 167: The Zep with the searchlights on it came over very close to the police-station at Hackney.
[Scot]Dundee Courier 4 Aug. 7/4: ‘ep’ off AScottish Coast [...] The Graf Zeppelin was sighted from the Mearns and Aberdeen coast yesterday.
[UK]Guardian G2 7 July 22: The protective mixture of iron oxide and aluminium painted onto the zep’s exterior [...] would go off like a flare.

In phrases

Zepps in a cloud (n.) (also airship in a cloud, Zeppelin and/in a cloud) [visual resemblance]

sausage and mash, but note orig. use cite 1916.

[[US]Day Book (Chicago) 12 Nov. 32/2: [from London Sketch] Little Zep that flies so light, / Drop no bombs on me tonight;' / Up above the world so high / Like a sausage in the sky].
[US]O.O. McIntyre New York Day by Day 23 June. [synd. col.] A Houston Street waiter call[ed] out ‘Two Zeppelins on a Cloud.’ Translated it means that the patron wanted two sausages on a fried egg.
[UK]Yorks Eve. Post 16 Oct. 5/4: The jargon of the ‘Tommy’ [...] is a never-ending source of wonder to canteen workers and barmaids [...] When a ‘Zeppelin and cloud’ is asked for, the purchaser wants [...] ‘sausage and mash’.
[UK]‘J.H. Ross’ Mint (1955) 161: There were Zepps in a cloud (sausages and mashed) and Adam and Eve on a raft (Hoxtonian for fried eggs on toast) as main dishes.
[UK]Bath Chron. 4 Aug. 25/6: The proprietor of a small City restaurant rattled off the following [...] ‘Joe Blake,’ rump steak [...] ‘Zeppelin in a cloud,’ sausage and mash.
[UK]Picture Post Mar. n.p.: [as used in J. Lyons’ Corner Houses] Airship in a Cloud: Sausage and mash.