Meanings
noundouble X (plural double Xs)
plural double Xs
- USdatedslangTwenty dollars; a $20 bill.
“Hikes aroun’ wit’ a hundre’ an’ ninety bucks in ’is kick an’ won’t loosen a double X fer an ol’ frien’ what’s up again’ it? Why, dat guy ain’t got de firs’ idee about bein’ square wit’ a pal or librul wit’ an ol’ friend in de same line. An’—”
1916, Jack Lait, “The Canada Kid” (chapter 9), in Beef, Iron and Wine, New York, N.Y.: Doubleday, Page & Company, pages 178–179
Origin
From X, the Roman numeral representing 10.
Full word history & related roots →Cite this entry
APA
double X. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/double%20X
MLA
“double X.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/double%20X. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “double X,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/double%20X.
Source: double X on Wiktionary, CC BY-SA 4.0.