dacha, n. — Green’s Dictionary of Slang

dacha n.

[Ital. dieci, ten]

(Ling. Fr./Polari) the number ten.

1861		(con. 15C) C. Reade Cloister and Hearth (1864) II 21: What with my crippledom and thy piety, a-wheeling of thy poor old dad, we’ll bleed the bumpkins of a dacha-saltee.
2019		P. Baker Fabulosa 291/1: dacha, daiture, deger ten.
2023		R. Milward Man-Eating Typewriter 4: In duey-chenta setta-daitcha-heksa junos (276 days, for those without the lingo).

dacha-one (n.)

(Ling. Fr./Polari) elevenpence.

1859, 1860