Word Study
    murex
CIDE DICTIONARY
murex, prop. n. [L., the purple fish.]. 
                                            
                                         A genus of marine gastropods, having rough, and frequently spinose, shells, which are often highly colored inside; the rock shells.  They abound in tropical seas.                                                                                 [1913 Webster]                                                                                                                    
                                                                                    OXFORD DICTIONARY
murex, n.  (pl.  murices or murexes) any gastropod mollusc of the genus Murex, yielding a purple dye.
                    Etymology
                        L
                                    
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