We used chamber-pots a good deal – ‘jerries’ – cause of much hilarity doe to the hostilities.1976, Angela Carter, “The Mother Lode”, in Shaking a Leg, Vintage, published 2013, page 3:
If a man builds a jerry-house, he has a jerry conscience; and there are a lot of consciences of that description going about.1889, Alfred Thomas Story, A book of vagrom men and vagrant thoughts, page 57:
Jerry
noun
/ˈd͡ʒɛɹi/
Etymology Clipping of German + -y. Popularized during World War I.
But Robert had been cheeriness itself, had told them to buck up and think of England, reminding them that moaning wasn’t going to beat the Jerries.2012, Margaret James, The Penny Bangle, Harpenden: Choc Lit, →ISBN, page 43:
Watch stealing, or jerry getting, as the thieving fraternity designate the operation, is carried on to a considerable extent all the year round.1883 November 17, Tit-Bits:
R. Austin Freeman, A Savant's Vendetta 'Do you know a jerry when you sees one — a red 'un, mind you?' […] The fellow looked furtively at the door and then, diving into an inner pocket, pulled out a handsome gold watch with a massive chain attached, exhibited it for a moment and then dropped it back.