Safranine

from WordNet (r) 3.0 (2006)

safranine
    n 1: any of a class of chiefly red organic dyes [syn:
         {safranine}, {safranin}, {saffranine}]

from The Collaborative International Dictionary of English v.0.48

Safranine \Saf"ra*nine\ (? or ?), n. [So called because used as
   a substitute for safranin.] (Chem.)
   An orange-red nitrogenous dyestuff produced artificially by
   oxidizing certain aniline derivatives, and used in dyeing
   silk and wool; also, any one of the series of which safranine
   proper is the type.
   [1913 Webster]