(Latin: tortoise, turtle; from earthern vessel)
The body is covered by a shell consisting of an upper or dorsal shell, called the carapace, and a lower or ventral shell, called the plastron, each of which consists of several plates.
2. Relating to, or resembling, a turtle or tortoise.
3. A turtle or tortoise.
2. From Roman antiquity, covers or screens which bodies of troops formed with their shields or targets, by holding them over their heads when standing close to each other.
These covers resembled the back of tortoises, and served to shelter the men from darts, stones, and other missiles. Similar defenses were sometimes formed of boards and moved on wheels.
2. A shelter formed by overlapping oblong shields, held by soldiers above their heads.
3. When capitalized, a genus of turtles, the land tortoise.