White, fair, or shining
Bionca is a modern phonetic variant of the Italian name Bianca. It shares the same etymological root meaning 'white' or 'pure', often used historically to describe a fair complexion or light hair.
Less common today
Bionca isn't in the latest US Top 1000. It last peaked at #1,971 in 1990.
US births per 5-year period, 1990βpresent (SSA data).