Tortoise

tor′tis, or -to is, n. together with turtles, a well-defined order of reptiles, distinguished especially by the dorsal ( carapace ) and ventral ( plastron ) shields which protect the body.— n. Tor′toise-shell , the horny epidermic plate of a species of turtle.— adj. of the colour of the foregoing, mottled in yellow and black. [O. Fr. tort is —L. tort us , twisted.]