any of several large tortoises of the genus Geochelone, of the Galápagos Islands and islands near Madagascar: some are endangered.
Origin
1910-15
Examples from the web for giant tortoise
Kids will have fun walking through giant tortoise shells, and take an archeological dig in hopes of discovering dinosaur bones.
British Dictionary definitions for giant tortoise
giant tortoise
noun
1.
any of various very large tortoises of the genus Testudo, of the Galápagos, Seychelles, and certain other islands, weighing up to 225 kilograms (495 lbs.)