any of several species of marine and freshwater reptiles with a bony or leathery shell, resembling the related tortoises, but with limbs adapted for swimming
any of several species of marine and freshwater reptiles that resemble the related tortoises, having a bony or leathery shell but with limbs adapted for swimming: families Cheloniidae and Dermmochelyidae
the flesh of a sea turtle used as food
in computer graphics, a small on-screen shape used as a drawing tool that is easily manipulated, esp by children learning basic computing skills
turn turtle
said esp of a boat: to capsize or overturn
[prob an alteration of French tortue: see tortoise]