Where does “rummy” come from?

I can't write this etymology summary because the chain provided contains only English → English repetitions with no earlier language sources, and the known meaning is listed as unknown. A valid etymology requires at least one source language predating English and a traceable meaning to support the word's origin.

rummy (English): A card game with many rule variants, conceptually...

Definitions

  1. A card game with many rule variants, conceptually...

Ancestry of “rummy”, step by step

StepLanguageWordMeaning
1EnglishrumA distilled spirit derived from fermented cane...
2Ottoman TurkishرومVarious other areas of the Ottoman Empire full of "Roman" (i.e. Byzantine Greek) people, particularly central Anatolia
3ArabicرُومByzantines
4Middle Persian𐭧𐭫𐭥𐭬Rome; Byzantine
5Ancient GreekῬωμανίαByzantine Empire
6Ancient Greek-ῐ́ᾱ{{l|en|-ia}}; "suffix forming abstract feminine...
7Proto-Indo-European-íh₂
8Proto-Indo-European-h₂Creates collective nouns, which refer to groups...

Words derived from “rummy

Every word from Proto-Indo-European -h₂