What does "kermes" mean?

Kermes: (Bot.) A small European evergreen oak (Quercus coccifera) on which the kermes insect (Coccus ilicis) feeds. J. Smith (Dict. Econ. Plants). Kermes mineral. (a) (Old Chem.) An artificial amorphous trisulphide of antimony; -- so called on account of its red color. (b) (Med. Chem.) A compound of the trioxide and trisulphide of antimony, used in medicine. This substance occurs in nature as the mineral kermesite.