411 REFERENCE · Wiktionary
AC Plonk
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Noun
1
en military slang historical aircraftman second class in the RAF
en 2002 Forfeit to War V. G. Renouf 207 https://books.google.com/books?id=ukJdCLMmcUIC&pg=PA207 He had recently been on leave, wearing the uniform of an AC Plonk (newly joined airman)
Usage notes
The rank referred to was abolished in 1964.
References
"A. C. plonk" in SNAFU Situation Normal All F***ed Up: Sailor, Airman, and Soldier Slang of World War II