Old English flasce

← Old English fleohtan (cognate)

← German Flasche (cognate)

← Proto-Germanic *flaskǭ (inherited)

← Proto-West Germanic *flaskā (inherited)

← Old High German flaska (cognate)

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

← Icelandic flaska (cognate)

← Old Norse flaska (cognate)

→ English flask (inherited)

→ English flagon (cognate)

→ Middle English flask (cognate)

→ Italian fiasco (cognate)

→ German Low German Fless (cognate)