Where does “бойница” come from?

бойница (Russian) comes from Russian бой, from English boy, from Middle English boye, from Old English bōia, from Proto-Germanic bōjô, from Proto-Germanic bō-, from Proto-Indo-European bʰā- — to say.

бойница (Russian): embrasure, loophole (slit in a castle wall)

Definitions

  1. embrasure, loophole (slit in a castle wall)

Ancestry of “бойница”, step by step

StepLanguageWordMeaning
1Russianбойbeating, breakage; battle, combat, engagement;...
2EnglishboyA young male; A male child: a son of any age; A...
3Middle Englishboyeservant, commoner, knave, boy
4Old Englishbōiaboy
5Proto-Germanicbōjôyounger brother, young male relation
6Proto-Germanicbō-A stem meaning "father, brother, close male...
7Proto-Indo-Europeanbʰā-to say
Every word from Proto-Indo-European bʰā-Every word from Proto-Germanic bō-Every word from Proto-Germanic bōjô