Where does “Arvaikheer” come from?

Arvaikheer (English) comes from Mongolian Арвайхээр, from Mongolian арвай, from Classical Mongolian ᠠᠷᠪᠠᠢ, from Middle Mongolian ꡝꡘ ꡎ, from Proto-Mongolic *arbaï, from Proto-Turkic arpa, from Proto-Iranian arpacyaH, from Proto-Iranian Hr̥pā́š ~ Hr̥pacáh.

Ancestry of “Arvaikheer”, step by step

StepLanguageWordMeaning
1MongolianАрвайхээр
2Mongolianарвайbarley
3Classical Mongolianᠠᠷᠪᠠᠢ
4Middle Mongolianꡝꡘ ꡎ
5Proto-Mongolic*arbaï
6Proto-Turkicarpabarley
7Proto-IranianarpacyaHbarley
8Proto-IranianHr̥pā́š ~ Hr̥pacáh
9Proto-Indo-IranianHr̥pā́ćš ~ Hr̥paćás
10Proto-Indo-Iranian-ā́ćšanimal and plant suffix
11Proto-Indo-European-eḱés
Every word from Proto-Indo-European -eḱésEvery word from Proto-Indo-Iranian -ā́ćšEvery word from Proto-Indo-Iranian Hr̥pā́ćš ~ Hr̥paćás