Proto-Turkic *bïčgak

→ Southern Altai бычак (derived)

→ Bashkir бысаҡ (inherited)

→ Shor пычақ (derived)

→ Dolgan баһак (inherited)

→ Hungarian bicska (cognate)

→ Khakas пычах (derived)

→ Karachay-Balkar бычакъ (derived)

→ Kyrgyz бычак (derived)

→ Yakut быһах (inherited)

→ Turkish bıçak (inherited)

→ Tuvan бижек (derived)