Where does “окошечко” come from?

окошечко (Russian) comes from Russian -ко́, from Proto-Slavic -ьko.

окошечко (Russian): (small) window; counter (in a ticket office, bank, etc.)

Definitions

  1. (small) window; counter (in a ticket office, bank, etc.)

Ancestry of “окошечко”, step by step

StepLanguageWordMeaning
1Russian-ко́Creates diminutives of normally neuter nouns and adverbs, normally having a colloquial register
2Proto-Slavic-ьko—
Every word from Proto-Slavic -ьko →Every word from Russian -ко́ →
окошечко — Etymology, Origin & Word History | Etymology Explorer