Definition of "rubbage"

E'er since poor Cheapside cross in rubbage lay, [...]

1646, John Hall, “A Satire”, in Poems, Cambridge, Cambridgeshire: Printed by Roger Daniel, printer to the Universitie, for J. Rothwell, […]; republished London: Longman, Hurst, Rees, Orme and Brown, 1816, book I, page 34

"And ain't you had nothing but that kind of rubbage to eat?" / "No, sah—nuffn' else."

1884 December 10, Mark Twain [pseudonym; Samuel Langhorne Clemens], chapter VIII, in The Adventures of Huckleberry Finn: (Tom Sawyer’s Comrade) […], London: Chatto & Windus, […], page 65

Simply because as Taciturn pretells, our wrongstoryshortener, he dumptied the wholeborrow of rubbages on to soil here.]

[1939 May 4, James Joyce, Finnegans Wake, London: Faber and Faber Limited; republished London: Faber & Faber Limited, 1960, part I, page 17

CRUFT: that which magically amounds in the Clubroom just before you walk in to clean up. In other words, rubbage. / : [...] Rubbage is a rare term for rubbish, but I had heard it used growing up in New England.

1959 June, Peter R. Samson, “An Abridged Dictionary of the TMRC Language”, in Personal Web Page of Peter R. Samson‎, published September 2005, archived from the original on 18 January 2019

I didn't want him to buy any more rubbage.

1974, G[erald] B[asil] Edwards, The Book of Ebenezer Le Page, London: Hamish Hamilton, published 1981; republished New York, N.Y.: New York Review Books, 2007, page 209