Portuguese flanco

← Old English hlanc (cognate)

← German lenken (mention)

← French flanc (derived)

← Middle French flanc (derived)

← Old French flanc (derived)

← Proto-Germanic *hlankaz (derived)

← Middle High German - (cognate)

← Middle Low German lanke (mention)

← Old High German hlanca (cognate)

← Proto-Indo-European *kleng- (derived)

→ Esperanto flanko (mention)