a species of medium-sized predatory sea snail, Haustellum brandaris, which secrets a substance that can be used to make a long-lasting purple dye- Tyrian purple
murex
Hyphenation
mu·rex
Pronunciation
Etymology
[ 'myur-"eks ] (noun.) 1589. New Latin, from Latin, mollusk yielding a purple dye; akin to Greek myak-, myax mussel.