This is the 6971st most frequent Russian word.
армином
"Армином" is not a standard Russian word; it may be a misspelling or a proper noun.
Used as a proper noun in the instrumental case.
Я вчера познакомился с Армином.
Yesterday, I met Armin.
Referring to a person's name in the instrumental case, indicating the person who is the object of pride.
Она гордится Армином за его достижения.
She is proud of Armin for his achievements.
Used to denote a person being compared with another, instrumental case in comparison.