> From Old Portuguese vermello (“red”), from Vulgar Latin *vermiclus, from Latin vermiculus (“little worm”), from vermis (“worm”), ultimately in reference to Kermes vermilio, a type of scale insect used to make a crimson dye.
Cognate with Galician vermello, Spanish bermejo, Asturian bermeyu, Catalan vermell, Occitan vermelh, French vermeil and Italian vermiglio. Also related to English vermilion. Compare also Portuguese vermículo, which is a borrowed doublet.