tortoiseshell
| Noun | 1. | tortoiseshell - the mottled horny substance of the shell of some turtles |
| 2. | tortoiseshell - brilliantly colored; larvae feed on nettles Synonyms: tortoiseshell butterfly | |
| 3. |  tortoiseshell - a cat having black and cream and yellowish markingsSynonyms: calico cat, tortoiseshell-cat |