Cognate of Mandarin Chinese 二 (èr)
эр (er)
эр • (er)
Perhaps from Proto-Turkic *ēr, compare Turkish er.
эр • (er) (Mongolian spelling ᠡᠷᠡ (er-e))
эр • (er) n inan (indeclinable)
эр • (er) f inan pl