Where does “йәшник” come from?

йәшник (Bashkir) comes from Russian я́щик, from Old East Slavic аскъ, from Old Norse askr, from Old English ærn, from Proto-West Germanic raʀn, from Proto-Germanic razną, from Proto-Indo-European h₁reh₁- — to row; to separate; loose, sparse, rare.

йәшник (Bashkir): box