Significatio vocis murex | Babel Free

Definitiones

1. A shellfish used as a source of the dye Tyrian purple; the purple-fish
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2. Tyrian purple, the purple dye, a purple color, made from the juice of the purple-fish
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3. A sharp murex shell used as a bridle bit.
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4. A pointed rock or stone.
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5. A caltrop.
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6. An iron spike.
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Aequivalentia

Exempla

“induerat Tyriō bis tīnctam mūrice pallam”

He had put on his mantle, twice dyed with Tyrian purple.

Gradus CEFR