mégot m (plural mégots)
Probably from regional mégauder (“to suckle”), from mégaud, from mègue (“whey”), from Vulgar Latin *mesga, from Gaulish (compare Old Irish medc (“whey”), Welsh maidd (“whey”), Cornish meith (“whey”)), from Proto-Celtic *mezgos (“whey”), from Proto-Indo-European *mesgos (“marrow”).