Green’s Dictionary of Slang

dump n.4

[SE dump, a heap]

1. (orig. US) an act of defecation.

implied in take a dump
[US](con. 1940s) C. Bram Hold Tight (1990) 145: A hurried fuck [...] A fuck like a dump.
[Aus](con. 1964-65) B. Thorpe Sex and Thugs and Rock ’n’ Roll 33: I pressed my case for a third-quarter dump.
[UK]Roger’s Profanisaurus 3 in Viz 98 Oct. 5: Brad rhym. slang. A dump. As in ‘Give me the paper, will you, I’m off for a Brad Pitt’.
[UK]N. Griffiths Grits 316: Oo. Big one ther. Birruver ring-stinger, that . . . a red-wine dump, poo, mud-out, crap, shite.
[US]Simon & Burns ‘Cradle of Civilization’ Generation Kill ep. 2 [TV script] ‘Good dump?’ [...] ‘I shit my brains out’.

2. (orig. US) a piece of excrement.

[US]D. Jenkins Semi-Tough 7: A man who can live with a mad dog and a closet load of dump can be expected to bust up some furniture every now and then.
[US]J. Stahl Happy Mutant Baby Pills 7: Incontinence wear and catheters (Referred to, among pharma-hacks, as ‘dump lockers’ and ‘caths’).
E. Hagelstein ‘Neighbor’s Dog’ in ThugLit Aug. [ebook] [One of them [i.e. a dog] circled around a bit like [...] then hunched over, squeezed out a big dump, and trotted away from it like they do.

3. (Aus.) in fig. sense, a hostile act.

[Aus]R.G. Barrett Wind & Monkey (2013) [ebook] Besides doing a bit of a dump on their colleagues Corris and Pope wouldn’t know shit from shaving cream.

In phrases

take a dump (v.)

1. (orig. US) to defecate, often in sense of incontinence.

[US](con. 1910s) J. Thompson Heed the Thunder (1994) 72: Where do you go when you have to take a dump at night?
[US](con. 1950) E. Frankel Band of Brothers 271: Gonna show you how to take a dump in this here twenty-five-below weather.
[US]Baker et al. CUSS.
[US]B. Gutcheon New Girls (1982) 235: I know a guy who got suspended from Princeton for taking a dump in Times Square.
[UK]M. Amis London Fields 116: A London pigeon goes and takes a dump on my head.
[UK]J. Poller Reach 84: While I was takin’ a dump, I got to thinkin’ about the shameful nature of ’uman waste.
[Aus]R.G. Barrett Mystery Bay Blues 10: Les never had to take a dump in the sink to remind people the dishes needed doing.
[US]T. Dorsey Stingray Shuffle 118: ‘Where the hell’d you go?’ [...] ‘We thought you were taking a big dump or something.’.
[US]T. Dorsey Atomic Lobster 62: Littering is like taking a big dump on the community.
[US]N. Walker Cherry 209: The way she said it was if I’d taken a dump on the floor.
[UK]M. Herron Joe Country [ebook] ‘Multitask? He couldn’t charge his phone while having a dump’.
[US]T. Pluck Boy from County Hell 270: ‘[C]come to the parking lot before I take a dump on the hood of your Tonka Toy’.
[UK]M. Herron Secret Hours 216: ‘I’ve heard this song before [...] It goes, “Give me all your money, while I take a dump in your hat”’.

2. to abuse, to triumph over.

[US]S.M. Jones August Snow [ebook] [I] listened to Charles Barkley take a hot steaming dump on the Los Angeles Lakers.