stuc

stuc is masculine in French.

stucco

From Middle French stucq (“a coating imitating marble”) from Italian stucco (“coating made of pulverised gypsum, plaster, stucco”) from Old Italian stucco, from Lombardic stucki, *stucchi (“crust, fragment, piece”) from Proto-Germanic *stukkiją (“stick, beam, stump”), from Proto-Indo-European *(s)tewg- (“shock, impact”). Akin to German stukki (“crust, fragment, piece”) (German Stück (“piece”)), Old Saxon stukki (“piece, fragment”), Old English stycce. More at stucco.