Safranin \Saf"ra*nin\, n. (Chem.) (a) An orange-red dyestuff extracted from the saffron. [R.] (b) A red dyestuff extracted from the safflower, and formerly used in dyeing wool, silk, and cotton pink and scarlet; -- called also {Spanish red}, {China lake}, and {carthamin}. (c) An orange-red dyestuff prepared from certain nitro compounds of creosol, and used as a substitute for the safflower dye.