scale (1)EnglishOxford American Thesaurusscale1 noun 1 all reptiles have scales covering the skin: plate; technical lamella, lamina, squama, scute, scutum. 2 the disease causes scales on the skin: flake; (scales) scurf, dandruff; technical furfur. 3 scale is bad enough in kettles, but can have a disastrous effect on the insides of boilers: limescale; deposit, encrustation, coating; British fur.