fronce

a frown; scowl

Inherited from Middle French fronce, from Old French fronce, fronche (“frown, wrinkles, small creases in cloth”), from Frankish *hrunkwiju (“wrinkle, rumple”) from Proto-Germanic *hrunkwijō, *hrunkwǭ (“fold, wrinkle”), from Proto-Indo-European *(s)ker- (“to turn, bend”). Akin to Old High German runza (“fold, wrinkle, crease”) (German Runzel (“wrinkle”)), Middle Dutch ronse (“frown”), Old Norse hrukka (“wrinkle, crease”) (Icelandic hrukka (“wrinkle, crease, ruck”)). More at ruck.