Tortoiseshell

noun

2. The mottled, horny, translucent, brownish covering of the carapace of certain tortoises or turtles, especially the hawksbill, formerly widely used to make combs, jewelry, and other articles.
3. A synthetic imitation of natural tortoiseshell.
5. A domestic cat having a coat with irregular patches of different colors, usually black and reddish-orange.