бра́ня (Bulgarian) comes from Proto-Slavic borniti, from Proto-Slavic bornь, from Proto-Balto-Slavic barˀnís, from Proto-Balto-Slavic bárˀtei, from Proto-Indo-European bʰerH- — to pierce; to strike; brown.
бра́ня (Bulgarian): to shield, to protect, to defend